207642434 has 4 divisors (see below), whose sum is σ = 311463654. Its totient is φ = 103821216.

The previous prime is 207642419. The next prime is 207642443. The reversal of 207642434 is 434246702.

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

It can be written as a sum of positive squares in only one way, i.e., 207216025 + 426409 = 14395^2 + 653^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 207642434.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51910607 + ... + 51910610.

Almost surely, 2^207642434 is an apocalyptic number.

207642434 is a deficient number, since it is larger than the sum of its proper divisors (103821220).

207642434 is a wasteful number, since it uses less digits than its factorization.

207642434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103821219.

The product of its (nonzero) digits is 32256, while the sum is 32.

The square root of 207642434 is about 14409.8033990752. The cubic root of 207642434 is about 592.1595036029.

The spelling of 207642434 in words is "two hundred seven million, six hundred forty-two thousand, four hundred thirty-four".