12129498 has 24 divisors (see below), whose sum is σ = 26653536. Its totient is φ = 3985800.

The previous prime is 12129497. The next prime is 12129499. The reversal of 12129498 is 89492121.

12129498 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12129497) and next prime (12129499).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is not an unprimeable number, because it can be changed into a prime (12129493) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3468 + ... + 6023.

It is an arithmetic number, because the mean of its divisors is an integer number (1110564).

Almost surely, 2^12129498 is an apocalyptic number.

12129498 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12129498 is an abundant number, since it is smaller than the sum of its proper divisors (14524038).

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

12129498 is a wasteful number, since it uses less digits than its factorization.

12129498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9570 (or 9567 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The square root of 12129498 is about 3482.7428845667. The cubic root of 12129498 is about 229.7634492970.

The spelling of 12129498 in words is "twelve million, one hundred twenty-nine thousand, four hundred ninety-eight".