121590748428 has 24 divisors (see below), whose sum is σ = 291379632432. Its totient is φ = 39434837184.

The previous prime is 121590748421. The next prime is 121590748429. The reversal of 121590748428 is 824847095121.

121590748428 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (121590748421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136926075 + ... + 136926962.

It is an arithmetic number, because the mean of its divisors is an integer number (12140818018).

Almost surely, 2^121590748428 is an apocalyptic number.

It is an amenable number.

121590748428 is an abundant number, since it is smaller than the sum of its proper divisors (169788884004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121590748428 is a wasteful number, since it uses less digits than its factorization.

121590748428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273853081 (or 273853079 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 51.

The spelling of 121590748428 in words is "one hundred twenty-one billion, five hundred ninety million, seven hundred forty-eight thousand, four hundred twenty-eight".