42192087 has 32 divisors (see below), whose sum is σ = 66316800. Its totient is φ = 23849280.

The previous prime is 42192001. The next prime is 42192089. The reversal of 42192087 is 78029124.

It is a happy number.

It is not a de Polignac number, because 42192087 - 2¹² = 42187991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42192089) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 134643 + ... + 134955.

It is an arithmetic number, because the mean of its divisors is an integer number (2072400).

Almost surely, 2^42192087 is an apocalyptic number.

42192087 is a deficient number, since it is larger than the sum of its proper divisors (24124713).

42192087 is a wasteful number, since it uses less digits than its factorization.

42192087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468 (or 454 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 42192087 is about 6495.5436262102. The cubic root of 42192087 is about 348.1317789336.

The spelling of 42192087 in words is "forty-two million, one hundred ninety-two thousand, eighty-seven".