156121245 has 48 divisors (see below), whose sum is σ = 312174720. Its totient is φ = 70699392.

The previous prime is 156121243. The next prime is 156121279. The reversal of 156121245 is 542121651.

156121245 is a `hidden beast` number, since 1 + 5 + 612 + 1 + 2 + 45 = 666.

156121245 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 156121245 - 2¹ = 156121243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156121243) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 32062 + ... + 36608.

It is an arithmetic number, because the mean of its divisors is an integer number (6503640).

Almost surely, 2^156121245 is an apocalyptic number.

156121245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

156121245 is a deficient number, since it is larger than the sum of its proper divisors (156053475).

156121245 is a wasteful number, since it uses less digits than its factorization.

156121245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4674 (or 4671 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 156121245 is about 12494.8487385802. The cubic root of 156121245 is about 538.4606882587.

Adding to 156121245 its reverse (542121651), we get a palindrome (698242896).

The spelling of 156121245 in words is "one hundred fifty-six million, one hundred twenty-one thousand, two hundred forty-five".