156121436 has 6 divisors (see below), whose sum is σ = 273212520. Its totient is φ = 78060716.

The previous prime is 156121429. The next prime is 156121439. The reversal of 156121436 is 634121651.

It is a happy number.

156121436 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 156121399 and 156121408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156121439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19515176 + ... + 19515183.

It is an arithmetic number, because the mean of its divisors is an integer number (45535420).

Almost surely, 2^156121436 is an apocalyptic number.

It is an amenable number.

156121436 is a deficient number, since it is larger than the sum of its proper divisors (117091084).

156121436 is a wasteful number, since it uses less digits than its factorization.

156121436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39030363 (or 39030361 counting only the distinct ones).

The product of its digits is 4320, while the sum is 29.

The square root of 156121436 is about 12494.8563817276. The cubic root of 156121436 is about 538.4609078444.

The spelling of 156121436 in words is "one hundred fifty-six million, one hundred twenty-one thousand, four hundred thirty-six".