157241420 has 48 divisors (see below), whose sum is σ = 379239168. Its totient is φ = 53645760.

The previous prime is 157241419. The next prime is 157241423. The reversal of 157241420 is 24142751.

It is a self number, because there is not a number n which added to its sum of digits gives 157241420.

It is not an unprimeable number, because it can be changed into a prime (157241423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26879 + ... + 32201.

It is an arithmetic number, because the mean of its divisors is an integer number (7900816).

Almost surely, 2^157241420 is an apocalyptic number.

157241420 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 157241420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (189619584).

157241420 is an abundant number, since it is smaller than the sum of its proper divisors (221997748).

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

157241420 is a wasteful number, since it uses less digits than its factorization.

157241420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5550 (or 5548 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 157241420 is about 12539.5940923142. The cubic root of 157241420 is about 539.7454447223.

The spelling of 157241420 in words is "one hundred fifty-seven million, two hundred forty-one thousand, four hundred twenty".