157020145 has 8 divisors (see below), whose sum is σ = 189411840. Its totient is φ = 124957680.

The previous prime is 157020139. The next prime is 157020151. The reversal of 157020145 is 541020751.

It is an interprime number because it is at equal distance from previous prime (157020139) and next prime (157020151).

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

It is a de Polignac number, because none of the positive numbers 2^k-157020145 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81255 + ... + 83164.

It is an arithmetic number, because the mean of its divisors is an integer number (23676480).

Almost surely, 2^157020145 is an apocalyptic number.

It is an amenable number.

157020145 is a deficient number, since it is larger than the sum of its proper divisors (32391695).

157020145 is a wasteful number, since it uses less digits than its factorization.

157020145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164615.

The product of its (nonzero) digits is 1400, while the sum is 25.

The square root of 157020145 is about 12530.7679333710. The cubic root of 157020145 is about 539.4921436943.

Adding to 157020145 its reverse (541020751), we get a palindrome (698040896).

The spelling of 157020145 in words is "one hundred fifty-seven million, twenty thousand, one hundred forty-five".