157140220 has 12 divisors (see below), whose sum is σ = 329994504. Its totient is φ = 62856080.

The previous prime is 157140169. The next prime is 157140227. The reversal of 157140220 is 22041751.

It is a happy number.

It is a super-3 number, since 3×157140220³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 157140191 and 157140200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157140227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3928486 + ... + 3928525.

It is an arithmetic number, because the mean of its divisors is an integer number (27499542).

Almost surely, 2^157140220 is an apocalyptic number.

157140220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157140220 is an abundant number, since it is smaller than the sum of its proper divisors (172854284).

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

157140220 is a wasteful number, since it uses less digits than its factorization.

157140220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7857020 (or 7857018 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 157140220 is about 12535.5582245068. The cubic root of 157140220 is about 539.6296271440.

Adding to 157140220 its reverse (22041751), we get a palindrome (179181971).

The spelling of 157140220 in words is "one hundred fifty-seven million, one hundred forty thousand, two hundred twenty".