157420 has 24 divisors (see below), whose sum is σ = 350784. Its totient is φ = 59136.

The previous prime is 157411. The next prime is 157427. The reversal of 157420 is 24751.

It is not an unprimeable number, because it can be changed into a prime (157427) by changing a digit.

157420 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109 + ... + 571.

It is an arithmetic number, because the mean of its divisors is an integer number (14616).

2¹⁵⁷⁴²⁰ is an apocalyptic number.

157420 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 157420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175392).

157420 is an abundant number, since it is smaller than the sum of its proper divisors (193364).

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

157420 is a wasteful number, since it uses less digits than its factorization.

157420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489 (or 487 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 157420 is about 396.7618933315. The cubic root of 157420 is about 53.9949698104.

The spelling of 157420 in words is "one hundred fifty-seven thousand, four hundred twenty".