42640152 has 16 divisors (see below), whose sum is σ = 106600440. Its totient is φ = 14213376.

The previous prime is 42640141. The next prime is 42640163. The reversal of 42640152 is 25104624.

It is an interprime number because it is at equal distance from previous prime (42640141) and next prime (42640163).

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 1776673 = 42640152 / (4 + 2 + 6 + 4 + 0 + 1 + 5 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 888313 + ... + 888360.

Almost surely, 2^42640152 is an apocalyptic number.

It is an amenable number.

42640152 is an abundant number, since it is smaller than the sum of its proper divisors (63960288).

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

42640152 is a wasteful number, since it uses less digits than its factorization.

42640152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1776682 (or 1776678 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 42640152 is about 6529.9427256294. The cubic root of 42640152 is about 349.3597874741.

Adding to 42640152 its reverse (25104624), we get a palindrome (67744776).

The spelling of 42640152 in words is "forty-two million, six hundred forty thousand, one hundred fifty-two".