125542020 has 48 divisors (see below), whose sum is σ = 354070080. Its totient is φ = 33234816.

The previous prime is 125542009. The next prime is 125542049. The reversal of 125542020 is 20245521.

It is a happy 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, 814 + ... + 15866.

It is an arithmetic number, because the mean of its divisors is an integer number (7376460).

Almost surely, 2^125542020 is an apocalyptic number.

125542020 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 125542020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177035040).

125542020 is an abundant number, since it is smaller than the sum of its proper divisors (228528060).

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

125542020 is a wasteful number, since it uses less digits than its factorization.

125542020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15204 (or 15202 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 125542020 is about 11204.5535386288. The cubic root of 125542020 is about 500.7216512711.

Adding to 125542020 its reverse (20245521), we get a palindrome (145787541).

The spelling of 125542020 in words is "one hundred twenty-five million, five hundred forty-two thousand, twenty".