42619990 has 16 divisors (see below), whose sum is σ = 87675552. Its totient is φ = 14612544.

The previous prime is 42619987. The next prime is 42619999. The reversal of 42619990 is 9991624.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42619999) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 304359 + ... + 304498.

It is an arithmetic number, because the mean of its divisors is an integer number (5479722).

Almost surely, 2^42619990 is an apocalyptic number.

42619990 is an abundant number, since it is smaller than the sum of its proper divisors (45055562).

42619990 is a wasteful number, since it uses less digits than its factorization.

42619990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608871.

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 42619990 is about 6528.3987316952. The cubic root of 42619990 is about 349.3047149490.

The spelling of 42619990 in words is "forty-two million, six hundred nineteen thousand, nine hundred ninety".