157423045 has 8 divisors (see below), whose sum is σ = 203439096. Its totient is φ = 116250816.

The previous prime is 157423039. The next prime is 157423061. The reversal of 157423045 is 540324751.

It can be written as a sum of positive squares in 4 ways, for example, as 2719201 + 154703844 = 1649^2 + 12438^2 .

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 157423045 - 2²³ = 149034437 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 157422998 and 157423016.

It is a congruent number.

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, 1210882 + ... + 1211011.

It is an arithmetic number, because the mean of its divisors is an integer number (25429887).

Almost surely, 2^157423045 is an apocalyptic number.

It is an amenable number.

157423045 is a deficient number, since it is larger than the sum of its proper divisors (46016051).

157423045 is a wasteful number, since it uses less digits than its factorization.

157423045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2421911.

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 157423045 is about 12546.8340628224. The cubic root of 157423045 is about 539.9531795254.

Adding to 157423045 its reverse (540324751), we get a palindrome (697747796).

The spelling of 157423045 in words is "one hundred fifty-seven million, four hundred twenty-three thousand, forty-five".