42238740 has 48 divisors (see below), whose sum is σ = 122088960. Its totient is φ = 10899840.

The previous prime is 42238687. The next prime is 42238753. The reversal of 42238740 is 4783224.

It is a super-2 number, since 2×42238740² = 3568222313575200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 42238698 and 42238707.

It is a congruent number.

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, 9495 + ... + 13214.

It is an arithmetic number, because the mean of its divisors is an integer number (2543520).

Almost surely, 2^42238740 is an apocalyptic number.

It is an amenable number.

42238740 is an abundant number, since it is smaller than the sum of its proper divisors (79850220).

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

42238740 is a wasteful number, since it uses less digits than its factorization.

42238740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22752 (or 22750 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 42238740 is about 6499.1337884367. The cubic root of 42238740 is about 348.2600447651.

The spelling of 42238740 in words is "forty-two million, two hundred thirty-eight thousand, seven hundred forty".