1512312420 has 48 divisors (see below), whose sum is σ = 4324578048. Its totient is φ = 394702080.

The previous prime is 1512312419. The next prime is 1512312437. The reversal of 1512312420 is 242132151.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 265321 + ... + 270960.

It is an arithmetic number, because the mean of its divisors is an integer number (90095376).

Almost surely, 2^1512312420 is an apocalyptic number.

1512312420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1512312420 is an abundant number, since it is smaller than the sum of its proper divisors (2812265628).

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

1512312420 is a wasteful number, since it uses less digits than its factorization.

1512312420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536340 (or 536338 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1512312420 is about 38888.4612706649. The cubic root of 1512312420 is about 1147.8377568595.

Adding to 1512312420 its reverse (242132151), we get a palindrome (1754444571).

The spelling of 1512312420 in words is "one billion, five hundred twelve million, three hundred twelve thousand, four hundred twenty".