42121092 has 48 divisors (see below), whose sum is σ = 106467200. Its totient is φ = 12883968.

The previous prime is 42121067. The next prime is 42121097. The reversal of 42121092 is 29012124.

It is not an unprimeable number, because it can be changed into a prime (42121097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29409 + ... + 30807.

Almost surely, 2^42121092 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 42121092, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53233600).

42121092 is an abundant number, since it is smaller than the sum of its proper divisors (64346108).

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

42121092 is a wasteful number, since it uses less digits than its factorization.

42121092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1612 (or 1610 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 42121092 is about 6490.0764248197. The cubic root of 42121092 is about 347.9364066648.

The spelling of 42121092 in words is "forty-two million, one hundred twenty-one thousand, ninety-two".