42621292 has 48 divisors (see below), whose sum is σ = 88058880. Its totient is φ = 17672832.

The previous prime is 42621287. The next prime is 42621307. The reversal of 42621292 is 29212624.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 42621292.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182808 + ... + 183040.

It is an arithmetic number, because the mean of its divisors is an integer number (1834560).

Almost surely, 2^42621292 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42621292, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44029440).

42621292 is an abundant number, since it is smaller than the sum of its proper divisors (45437588).

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

42621292 is a wasteful number, since it uses less digits than its factorization.

42621292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430 (or 428 counting only the distinct ones).

The product of its digits is 3456, while the sum is 28.

The square root of 42621292 is about 6528.4984491076. The cubic root of 42621292 is about 349.3082718879.

It can be divided in two parts, 4262129 and 2, that multiplied together give a palindrome (8524258).

The spelling of 42621292 in words is "forty-two million, six hundred twenty-one thousand, two hundred ninety-two".