124022013402 has 64 divisors (see below), whose sum is σ = 290718720000. Its totient is φ = 35256679920.

The previous prime is 124022013389. The next prime is 124022013407. The reversal of 124022013402 is 204310220421.

It is a super-2 number, since 2×124022013402² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (124022013407) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 258127 + ... + 560957.

It is an arithmetic number, because the mean of its divisors is an integer number (4542480000).

Almost surely, 2^124022013402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 124022013402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145359360000).

124022013402 is an abundant number, since it is smaller than the sum of its proper divisors (166696706598).

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

124022013402 is a wasteful number, since it uses less digits than its factorization.

124022013402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303056 (or 303042 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 124022013402 its reverse (204310220421), we get a palindrome (328332233823).

The spelling of 124022013402 in words is "one hundred twenty-four billion, twenty-two million, thirteen thousand, four hundred two".