1512135420 has 96 divisors (see below), whose sum is σ = 4346969088. Its totient is φ = 392539392.

The previous prime is 1512135413. The next prime is 1512135439. The reversal of 1512135420 is 245312151.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 946062 + ... + 947658.

It is an arithmetic number, because the mean of its divisors is an integer number (45280928).

Almost surely, 2^1512135420 is an apocalyptic number.

1512135420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1512135420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2173484544).

1512135420 is an abundant number, since it is smaller than the sum of its proper divisors (2834833668).

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

1512135420 is a wasteful number, since it uses less digits than its factorization.

1512135420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2019 (or 2017 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 1512135420 is about 38886.1854647637. The cubic root of 1512135420 is about 1147.7929743999.

Adding to 1512135420 its reverse (245312151), we get a palindrome (1757447571).

The spelling of 1512135420 in words is "one billion, five hundred twelve million, one hundred thirty-five thousand, four hundred twenty".