422121042 has 48 divisors (see below), whose sum is σ = 1081304640. Its totient is φ = 116446176.

The previous prime is 422121041. The next prime is 422121059. The reversal of 422121042 is 240121224.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (422121041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54108 + ... + 61415.

It is an arithmetic number, because the mean of its divisors is an integer number (22527180).

Almost surely, 2^422121042 is an apocalyptic number.

422121042 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

422121042 is an abundant number, since it is smaller than the sum of its proper divisors (659183598).

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

422121042 is a wasteful number, since it uses less digits than its factorization.

422121042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115567 (or 115564 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 422121042 is about 20545.5844891305. The cubic root of 422121042 is about 750.1457743313.

Adding to 422121042 its reverse (240121224), we get a palindrome (662242266).

The spelling of 422121042 in words is "four hundred twenty-two million, one hundred twenty-one thousand, forty-two".