42291687902 has 4 divisors (see below), whose sum is σ = 63437531856. Its totient is φ = 21145843950.

The previous prime is 42291687901. The next prime is 42291687953. The reversal of 42291687902 is 20978619224.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42291687901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10572921974 + ... + 10572921977.

It is an arithmetic number, because the mean of its divisors is an integer number (15859382964).

Almost surely, 2^42291687902 is an apocalyptic number.

42291687902 is a deficient number, since it is larger than the sum of its proper divisors (21145843954).

42291687902 is a wasteful number, since it uses less digits than its factorization.

42291687902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21145843953.

The product of its (nonzero) digits is 870912, while the sum is 50.

The spelling of 42291687902 in words is "forty-two billion, two hundred ninety-one million, six hundred eighty-seven thousand, nine hundred two".