12021492 has 24 divisors (see below), whose sum is σ = 32057536. Its totient is φ = 3434688.

The previous prime is 12021491. The next prime is 12021539. The reversal of 12021492 is 29412021.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71473 + ... + 71640.

Almost surely, 2^12021492 is an apocalyptic number.

12021492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12021492 is an abundant number, since it is smaller than the sum of its proper divisors (20036044).

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

12021492 is a wasteful number, since it uses less digits than its factorization.

12021492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143127 (or 143125 counting only the distinct ones).

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

The square root of 12021492 is about 3467.2023304099. The cubic root of 12021492 is about 229.0794458750.

It can be divided in two parts, 120 and 21492, that added together give a palindrome (21612).

The spelling of 12021492 in words is "twelve million, twenty-one thousand, four hundred ninety-two".