123122140400 has 60 divisors (see below), whose sum is σ = 338058227472. Its totient is φ = 42213304320.

The previous prime is 123122140373. The next prime is 123122140403. The reversal of 123122140400 is 4041221321.

It is a super-2 number, since 2×123122140400² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123122140403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21983297 + ... + 21988896.

Almost surely, 2^123122140400 is an apocalyptic number.

123122140400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123122140400 is an abundant number, since it is smaller than the sum of its proper divisors (214936087072).

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

123122140400 is a wasteful number, since it uses less digits than its factorization.

123122140400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43972218 (or 43972207 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 123122140400 its reverse (4041221321), we get a palindrome (127163361721).

The spelling of 123122140400 in words is "one hundred twenty-three billion, one hundred twenty-two million, one hundred forty thousand, four hundred".