42391492 has 48 divisors (see below), whose sum is σ = 89554752. Its totient is φ = 17297280.

The previous prime is 42391471. The next prime is 42391513. The reversal of 42391492 is 29419324.

42391492 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (42391471) and next prime (42391513).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20163 + ... + 22165.

It is an arithmetic number, because the mean of its divisors is an integer number (1865724).

Almost surely, 2^42391492 is an apocalyptic number.

It is an amenable number.

42391492 is an abundant number, since it is smaller than the sum of its proper divisors (47163260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42391492 is a wasteful number, since it uses less digits than its factorization.

42391492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2068 (or 2066 counting only the distinct ones).

The product of its digits is 15552, while the sum is 34.

The square root of 42391492 is about 6510.8749028068. The cubic root of 42391492 is about 348.6793550890.

The spelling of 42391492 in words is "forty-two million, three hundred ninety-one thousand, four hundred ninety-two".