124231021420 has 24 divisors (see below), whose sum is σ = 284601976848. Its totient is φ = 45174916800.

The previous prime is 124231021361. The next prime is 124231021423. The reversal of 124231021420 is 24120132421.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 124231021391 and 124231021400.

It is not an unprimeable number, because it can be changed into a prime (124231021423) 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, 282343011 + ... + 282343450.

It is an arithmetic number, because the mean of its divisors is an integer number (11858415702).

Almost surely, 2^124231021420 is an apocalyptic number.

124231021420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

124231021420 is an abundant number, since it is smaller than the sum of its proper divisors (160370955428).

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

124231021420 is a wasteful number, since it uses less digits than its factorization.

124231021420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564686481 (or 564686479 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 124231021420 its reverse (24120132421), we get a palindrome (148351153841).

The spelling of 124231021420 in words is "one hundred twenty-four billion, two hundred thirty-one million, twenty-one thousand, four hundred twenty".