140612545 has 4 divisors (see below), whose sum is σ = 168735060. Its totient is φ = 112490032.

The previous prime is 140612533. The next prime is 140612557. The reversal of 140612545 is 545216041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 545216041 = 401 ⋅1359641.

It is an interprime number because it is at equal distance from previous prime (140612533) and next prime (140612557).

It can be written as a sum of positive squares in 2 ways, for example, as 100821681 + 39790864 = 10041^2 + 6308^2 .

It is a cyclic number.

It is not a de Polignac number, because 140612545 - 2⁵ = 140612513 is a prime.

It is a super-2 number, since 2×140612545² = 39543775622754050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14061250 + ... + 14061259.

It is an arithmetic number, because the mean of its divisors is an integer number (42183765).

Almost surely, 2^140612545 is an apocalyptic number.

It is an amenable number.

140612545 is a deficient number, since it is larger than the sum of its proper divisors (28122515).

140612545 is an equidigital number, since it uses as much as digits as its factorization.

140612545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28122514.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 140612545 is about 11858.0160650928. The cubic root of 140612545 is about 520.0056027503.

Adding to 140612545 its reverse (545216041), we get a palindrome (685828586).

It can be divided in two parts, 1406125 and 45, that multiplied together give a triangular number (63275625 = T₁₁₂₄₉).

The spelling of 140612545 in words is "one hundred forty million, six hundred twelve thousand, five hundred forty-five".