142515420 has 48 divisors (see below), whose sum is σ = 422519328. Its totient is φ = 35768320.

The previous prime is 142515413. The next prime is 142515427. The reversal of 142515420 is 24515241.

It is an interprime number because it is at equal distance from previous prime (142515413) and next prime (142515427).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142515427) 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, 68841 + ... + 70880.

It is an arithmetic number, because the mean of its divisors is an integer number (8802486).

Almost surely, 2^142515420 is an apocalyptic number.

142515420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142515420 is an abundant number, since it is smaller than the sum of its proper divisors (280003908).

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

142515420 is a wasteful number, since it uses less digits than its factorization.

142515420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139750 (or 139748 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 142515420 is about 11937.9822415683. The cubic root of 142515420 is about 522.3408029765.

The spelling of 142515420 in words is "one hundred forty-two million, five hundred fifteen thousand, four hundred twenty".