1234400412 has 24 divisors (see below), whose sum is σ = 3291734656. Its totient is φ = 352685808.

The previous prime is 1234400353. The next prime is 1234400449. The reversal of 1234400412 is 2140044321.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7347538 + ... + 7347705.

Almost surely, 2^1234400412 is an apocalyptic number.

1234400412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1234400412 is an abundant number, since it is smaller than the sum of its proper divisors (2057334244).

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

1234400412 is a wasteful number, since it uses less digits than its factorization.

1234400412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14695257 (or 14695255 counting only the distinct ones).

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

The square root of 1234400412 is about 35134.0349518811. The cubic root of 1234400412 is about 1072.7174679777.

Adding to 1234400412 its reverse (2140044321), we get a palindrome (3374444733).

The spelling of 1234400412 in words is "one billion, two hundred thirty-four million, four hundred thousand, four hundred twelve".