8121492 has 48 divisors (see below), whose sum is σ = 21246400. Its totient is φ = 2682720.

The previous prime is 8121439. The next prime is 8121499. The reversal of 8121492 is 2941218.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8121499) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14742 + ... + 15282.

Almost surely, 2^8121492 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 8121492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10623200).

8121492 is an abundant number, since it is smaller than the sum of its proper divisors (13124908).

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

8121492 is a wasteful number, since it uses less digits than its factorization.

8121492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693 (or 685 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 8121492 is about 2849.8231524079. The cubic root of 8121492 is about 201.0073510343.

It can be divided in two parts, 812 and 1492, that added together give a square (2304 = 48²).

The spelling of 8121492 in words is "eight million, one hundred twenty-one thousand, four hundred ninety-two".