157128007 has 4 divisors (see below), whose sum is σ = 157192200. Its totient is φ = 157063816.

The previous prime is 157127959. The next prime is 157128053. The reversal of 157128007 is 700821751.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 700821751 = 7 ⋅100117393.

It is a cyclic number.

It is not a de Polignac number, because 157128007 - 2⁷ = 157127879 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 157128007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157128067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28273 + ... + 33370.

It is an arithmetic number, because the mean of its divisors is an integer number (39298050).

Almost surely, 2^157128007 is an apocalyptic number.

157128007 is a deficient number, since it is larger than the sum of its proper divisors (64193).

157128007 is an equidigital number, since it uses as much as digits as its factorization.

157128007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64192.

The product of its (nonzero) digits is 3920, while the sum is 31.

The square root of 157128007 is about 12535.0710807717. The cubic root of 157128007 is about 539.6156467059.

Adding to 157128007 its reverse (700821751), we get a palindrome (857949758).

It can be divided in two parts, 157 and 128007, that added together give a square (128164 = 358²).

The spelling of 157128007 in words is "one hundred fifty-seven million, one hundred twenty-eight thousand, seven".