42319890 has 48 divisors (see below), whose sum is σ = 110388096. Its totient is φ = 11248800.

The previous prime is 42319883. The next prime is 42319939. The reversal of 42319890 is 9891324.

It is a super-2 number, since 2×42319890² = 3581946179224200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38245 + ... + 39335.

It is an arithmetic number, because the mean of its divisors is an integer number (2299752).

Almost surely, 2^42319890 is an apocalyptic number.

42319890 is an abundant number, since it is smaller than the sum of its proper divisors (68068206).

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

42319890 is a wasteful number, since it uses less digits than its factorization.

42319890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1535 (or 1532 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 42319890 is about 6505.3739323731. The cubic root of 42319890 is about 348.4829303845.

The spelling of 42319890 in words is "forty-two million, three hundred nineteen thousand, eight hundred ninety".