142145520 has 160 divisors (see below), whose sum is σ = 501825024. Its totient is φ = 32947200.

The previous prime is 142145513. The next prime is 142145533. The reversal of 142145520 is 25541241.

142145520 = T₂₃₃ + T₂₃₄ + ... + T₉₅₂.

142145520 = 2475² + 2476² + ... + 2497².

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 59550 + ... + 61890.

Almost surely, 2^142145520 is an apocalyptic number.

142145520 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 142145520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (250912512).

142145520 is an abundant number, since it is smaller than the sum of its proper divisors (359679504).

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

142145520 is a wasteful number, since it uses less digits than its factorization.

142145520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2391 (or 2385 counting only the distinct ones).

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

The square root of 142145520 is about 11922.4796078668. The cubic root of 142145520 is about 521.8884980792. Note that the first 3 decimals are identical.

Adding to 142145520 its reverse (25541241), we get a palindrome (167686761).

The spelling of 142145520 in words is "one hundred forty-two million, one hundred forty-five thousand, five hundred twenty".