43142520 has 64 divisors (see below), whose sum is σ = 130014720. Its totient is φ = 11452544.

The previous prime is 43142467. The next prime is 43142531. The reversal of 43142520 is 2524134.

It is a super-2 number, since 2×43142520² = 3722554063900800, which contains 22 as substring.

It is a congruent number.

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, 30877 + ... + 32243.

It is an arithmetic number, because the mean of its divisors is an integer number (2031480).

Almost surely, 2^43142520 is an apocalyptic number.

43142520 is a gapful number since it is divisible by the number (40) 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 43142520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65007360).

43142520 is an abundant number, since it is smaller than the sum of its proper divisors (86872200).

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

43142520 is a wasteful number, since it uses less digits than its factorization.

43142520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1644 (or 1640 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 43142520 is about 6568.2965828288. The cubic root of 43142520 is about 350.7264367911.

Adding to 43142520 its reverse (2524134), we get a palindrome (45666654).

The spelling of 43142520 in words is "forty-three million, one hundred forty-two thousand, five hundred twenty".