140052436 has 6 divisors (see below), whose sum is σ = 245091770. Its totient is φ = 70026216.

The previous prime is 140052431. The next prime is 140052449. The reversal of 140052436 is 634250041.

It can be written as a sum of positive squares in only one way, i.e., 120868036 + 19184400 = 10994^2 + 4380^2 .

It is a super-2 number, since 2×140052436² = 39229369659068192, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 140052436.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140052431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17506551 + ... + 17506558.

Almost surely, 2^140052436 is an apocalyptic number.

It is an amenable number.

140052436 is a deficient number, since it is larger than the sum of its proper divisors (105039334).

140052436 is a wasteful number, since it uses less digits than its factorization.

140052436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35013113 (or 35013111 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 140052436 is about 11834.3751841827. The cubic root of 140052436 is about 519.3142291458.

The spelling of 140052436 in words is "one hundred forty million, fifty-two thousand, four hundred thirty-six".