157143730 has 16 divisors (see below), whose sum is σ = 283328280. Its totient is φ = 62753152.

The previous prime is 157143713. The next prime is 157143761. The reversal of 157143730 is 37341751.

It can be written as a sum of positive squares in 4 ways, for example, as 104305369 + 52838361 = 10213^2 + 7269^2 .

It is a junction number, because it is equal to n+sod(n) for n = 157143692 and 157143701.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6565 + ... + 18904.

Almost surely, 2^157143730 is an apocalyptic number.

157143730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

157143730 is a deficient number, since it is larger than the sum of its proper divisors (126184550).

157143730 is a wasteful number, since it uses less digits than its factorization.

157143730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26093.

The product of its (nonzero) digits is 8820, while the sum is 31.

The square root of 157143730 is about 12535.6982254679. The cubic root of 157143730 is about 539.6336449694.

The spelling of 157143730 in words is "one hundred fifty-seven million, one hundred forty-three thousand, seven hundred thirty".