42037989 has 8 divisors (see below), whose sum is σ = 64057920. Its totient is φ = 24021696.

The previous prime is 42037987. The next prime is 42038021. The reversal of 42037989 is 98973024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42037989 - 2¹ = 42037987 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42037989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42037987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1000884 + ... + 1000925.

It is an arithmetic number, because the mean of its divisors is an integer number (8007240).

Almost surely, 2^42037989 is an apocalyptic number.

It is an amenable number.

42037989 is a deficient number, since it is larger than the sum of its proper divisors (22019931).

42037989 is a wasteful number, since it uses less digits than its factorization.

42037989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2001819.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 42037989 is about 6483.6709509351. The cubic root of 42037989 is about 347.7074351100.

The spelling of 42037989 in words is "forty-two million, thirty-seven thousand, nine hundred eighty-nine".