42102507 has 4 divisors (see below), whose sum is σ = 56136680. Its totient is φ = 28068336.

The previous prime is 42102493. The next prime is 42102509. The reversal of 42102507 is 70520124.

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

It is not a de Polignac number, because 42102507 - 2¹⁴ = 42086123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42102509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7017082 + ... + 7017087.

It is an arithmetic number, because the mean of its divisors is an integer number (14034170).

Almost surely, 2^42102507 is an apocalyptic number.

42102507 is a deficient number, since it is larger than the sum of its proper divisors (14034173).

42102507 is a wasteful number, since it uses less digits than its factorization.

42102507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14034172.

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 42102507 is about 6488.6444655259. The cubic root of 42102507 is about 347.8852260559.

The spelling of 42102507 in words is "forty-two million, one hundred two thousand, five hundred seven".