42238780 has 12 divisors (see below), whose sum is σ = 88701480. Its totient is φ = 16895504.

The previous prime is 42238753. The next prime is 42238789. The reversal of 42238780 is 8783224.

It is a super-2 number, since 2×42238780² = 3568229071776800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42238789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1055950 + ... + 1055989.

It is an arithmetic number, because the mean of its divisors is an integer number (7391790).

Almost surely, 2^42238780 is an apocalyptic number.

It is an amenable number.

42238780 is an abundant number, since it is smaller than the sum of its proper divisors (46462700).

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

42238780 is a wasteful number, since it uses less digits than its factorization.

42238780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2111948 (or 2111946 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 42238780 is about 6499.1368657692. The cubic root of 42238780 is about 348.2601546989.

The spelling of 42238780 in words is "forty-two million, two hundred thirty-eight thousand, seven hundred eighty".