42619988 has 6 divisors (see below), whose sum is σ = 74584986. Its totient is φ = 21309992.

The previous prime is 42619987. The next prime is 42619999. The reversal of 42619988 is 88991624.

It can be written as a sum of positive squares in only one way, i.e., 39790864 + 2829124 = 6308^2 + 1682^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42619987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5327495 + ... + 5327502.

It is an arithmetic number, because the mean of its divisors is an integer number (12430831).

Almost surely, 2^42619988 is an apocalyptic number.

It is an amenable number.

42619988 is a deficient number, since it is larger than the sum of its proper divisors (31964998).

42619988 is a wasteful number, since it uses less digits than its factorization.

42619988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10655001 (or 10654999 counting only the distinct ones).

The product of its digits is 248832, while the sum is 47.

The square root of 42619988 is about 6528.3985785183. The cubic root of 42619988 is about 349.3047094851.

The spelling of 42619988 in words is "forty-two million, six hundred nineteen thousand, nine hundred eighty-eight".