12151420 has 24 divisors (see below), whose sum is σ = 25659648. Its totient is φ = 4833600.

The previous prime is 12151417. The next prime is 12151453. The reversal of 12151420 is 2415121.

It is a junction number, because it is equal to n+sod(n) for n = 12151394 and 12151403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2230 + ... + 5410.

It is an arithmetic number, because the mean of its divisors is an integer number (1069152).

Almost surely, 2^12151420 is an apocalyptic number.

12151420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12151420 is an abundant number, since it is smaller than the sum of its proper divisors (13508228).

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

12151420 is a wasteful number, since it uses less digits than its factorization.

12151420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3381 (or 3379 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 12151420 is about 3485.8886958708. Note that the first 3 decimals coincide. The cubic root of 12151420 is about 229.9017854136.

Adding to 12151420 its reverse (2415121), we get a palindrome (14566541).

The spelling of 12151420 in words is "twelve million, one hundred fifty-one thousand, four hundred twenty".