157242765 has 16 divisors (see below), whose sum is σ = 264830400. Its totient is φ = 79448832.

The previous prime is 157242737. The next prime is 157242773. The reversal of 157242765 is 567242751.

It is not a de Polignac number, because 157242765 - 2⁵ = 157242733 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 275580 + ... + 276149.

It is an arithmetic number, because the mean of its divisors is an integer number (16551900).

Almost surely, 2^157242765 is an apocalyptic number.

157242765 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

157242765 is a deficient number, since it is larger than the sum of its proper divisors (107587635).

157242765 is a wasteful number, since it uses less digits than its factorization.

157242765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551756.

The product of its digits is 117600, while the sum is 39.

The square root of 157242765 is about 12539.6477223246. The cubic root of 157242765 is about 539.7469836628.

The spelling of 157242765 in words is "one hundred fifty-seven million, two hundred forty-two thousand, seven hundred sixty-five".