145402542205 has 8 divisors (see below), whose sum is σ = 174486655800. Its totient is φ = 116319630336.

The previous prime is 145402542161. The next prime is 145402542209. The reversal of 145402542205 is 502245204541.

It can be written as a sum of positive squares in 4 ways, for example, as 25992210841 + 119410331364 = 161221^2 + 345558^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145402542205 is a prime.

It is a super-2 number, since 2×145402542205² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145402542209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8440 + ... + 539329.

It is an arithmetic number, because the mean of its divisors is an integer number (21810831975).

Almost surely, 2^145402542205 is an apocalyptic number.

It is an amenable number.

145402542205 is a deficient number, since it is larger than the sum of its proper divisors (29084113595).

145402542205 is an equidigital number, since it uses as much as digits as its factorization.

145402542205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600863.

The product of its (nonzero) digits is 64000, while the sum is 34.

Adding to 145402542205 its reverse (502245204541), we get a palindrome (647647746746).

The spelling of 145402542205 in words is "one hundred forty-five billion, four hundred two million, five hundred forty-two thousand, two hundred five".