125120420 has 12 divisors (see below), whose sum is σ = 262752924. Its totient is φ = 50048160.

The previous prime is 125120419. The next prime is 125120431. The reversal of 125120420 is 24021521.

It can be written as a sum of positive squares in 2 ways, for example, as 50608996 + 74511424 = 7114^2 + 8632^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3127991 + ... + 3128030.

It is an arithmetic number, because the mean of its divisors is an integer number (21896077).

Almost surely, 2^125120420 is an apocalyptic number.

125120420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125120420 is an abundant number, since it is smaller than the sum of its proper divisors (137632504).

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

125120420 is a wasteful number, since it uses less digits than its factorization.

125120420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6256030 (or 6256028 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 125120420 is about 11185.7239372336. The cubic root of 125120420 is about 500.1605084685.

Adding to 125120420 its reverse (24021521), we get a palindrome (149141941).

The spelling of 125120420 in words is "one hundred twenty-five million, one hundred twenty thousand, four hundred twenty".