42291892 has 6 divisors (see below), whose sum is σ = 74010818. Its totient is φ = 21145944.

The previous prime is 42291863. The next prime is 42291923. The reversal of 42291892 is 29819224.

It can be written as a sum of positive squares in only one way, i.e., 23853456 + 18438436 = 4884^2 + 4294^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5286483 + ... + 5286490.

Almost surely, 2^42291892 is an apocalyptic number.

It is an amenable number.

42291892 is a deficient number, since it is larger than the sum of its proper divisors (31718926).

42291892 is a wasteful number, since it uses less digits than its factorization.

42291892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10572977 (or 10572975 counting only the distinct ones).

The product of its digits is 20736, while the sum is 37.

The square root of 42291892 is about 6503.2216631451. The cubic root of 42291892 is about 348.4060636321.

The spelling of 42291892 in words is "forty-two million, two hundred ninety-one thousand, eight hundred ninety-two".