140451005 has 4 divisors (see below), whose sum is σ = 168541212. Its totient is φ = 112360800.

The previous prime is 140450963. The next prime is 140451011. The reversal of 140451005 is 500154041.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 37773316 + 102677689 = 6146^2 + 10133^2 .

It is not a de Polignac number, because 140451005 - 2⁶ = 140450941 is a prime.

It is a super-3 number, since 3×140451005³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14045096 + ... + 14045105.

It is an arithmetic number, because the mean of its divisors is an integer number (42135303).

Almost surely, 2^140451005 is an apocalyptic number.

It is an amenable number.

140451005 is a deficient number, since it is larger than the sum of its proper divisors (28090207).

140451005 is an equidigital number, since it uses as much as digits as its factorization.

140451005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28090206.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 140451005 is about 11851.2026815847. The cubic root of 140451005 is about 519.8063936552.

The spelling of 140451005 in words is "one hundred forty million, four hundred fifty-one thousand, five".