207142745 has 8 divisors (see below), whose sum is σ = 249518016. Its totient is φ = 165083056.

The previous prime is 207142729. The next prime is 207142751. The reversal of 207142745 is 547241702.

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

It is a cyclic number.

It is not a de Polignac number, because 207142745 - 2⁴ = 207142729 is a prime.

It is a super-2 number, since 2×207142745² = 85816233612270050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77447 + ... + 80076.

It is an arithmetic number, because the mean of its divisors is an integer number (31189752).

Almost surely, 2^207142745 is an apocalyptic number.

It is an amenable number.

207142745 is a deficient number, since it is larger than the sum of its proper divisors (42375271).

207142745 is a wasteful number, since it uses less digits than its factorization.

207142745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157791.

The product of its (nonzero) digits is 15680, while the sum is 32.

The square root of 207142745 is about 14392.4544466884. The cubic root of 207142745 is about 591.6841138367.

The spelling of 207142745 in words is "two hundred seven million, one hundred forty-two thousand, seven hundred forty-five".