157420777 has 8 divisors (see below), whose sum is σ = 159834080. Its totient is φ = 155014560.

The previous prime is 157420751. The next prime is 157420789. The reversal of 157420777 is 777024751.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 157420777 - 2⁷ = 157420649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157420177) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57874 + ... + 60532.

It is an arithmetic number, because the mean of its divisors is an integer number (19979260).

Almost surely, 2^157420777 is an apocalyptic number.

It is an amenable number.

157420777 is a deficient number, since it is larger than the sum of its proper divisors (2413303).

157420777 is an equidigital number, since it uses as much as digits as its factorization.

157420777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3543.

The product of its (nonzero) digits is 96040, while the sum is 40.

The square root of 157420777 is about 12546.7436811310. The cubic root of 157420777 is about 539.9505864707.

The spelling of 157420777 in words is "one hundred fifty-seven million, four hundred twenty thousand, seven hundred seventy-seven".