4121992 has 16 divisors (see below), whose sum is σ = 8832960. Its totient is φ = 1766544.

The previous prime is 4121987. The next prime is 4122043. The reversal of 4121992 is 2991214.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 4121992.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36748 + ... + 36859.

It is an arithmetic number, because the mean of its divisors is an integer number (552060).

Almost surely, 2^4121992 is an apocalyptic number.

It is an amenable number.

4121992 is an abundant number, since it is smaller than the sum of its proper divisors (4710968).

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

4121992 is a wasteful number, since it uses less digits than its factorization.

4121992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73620 (or 73616 counting only the distinct ones).

The product of its digits is 1296, while the sum is 28.

The square root of 4121992 is about 2030.2689477013. The cubic root of 4121992 is about 160.3377241385.

The spelling of 4121992 in words is "four million, one hundred twenty-one thousand, nine hundred ninety-two".