42420460 has 12 divisors (see below), whose sum is σ = 89083008. Its totient is φ = 16968176.

The previous prime is 42420451. The next prime is 42420467. The reversal of 42420460 is 6402424.

It is a super-2 number, since 2×42420460² = 3598990853223200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42420467) 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, 1060492 + ... + 1060531.

It is an arithmetic number, because the mean of its divisors is an integer number (7423584).

Almost surely, 2^42420460 is an apocalyptic number.

It is an amenable number.

42420460 is an abundant number, since it is smaller than the sum of its proper divisors (46662548).

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

42420460 is a wasteful number, since it uses less digits than its factorization.

42420460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2121032 (or 2121030 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 42420460 is about 6513.0991087193. The cubic root of 42420460 is about 348.7587597308.

Adding to 42420460 its reverse (6402424), we get a palindrome (48822884).

The spelling of 42420460 in words is "forty-two million, four hundred twenty thousand, four hundred sixty".