1234400442 has 16 divisors (see below), whose sum is σ = 2693237472. Its totient is φ = 374060720.

The previous prime is 1234400353. The next prime is 1234400449. The reversal of 1234400442 is 2440044321.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1234400449) 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, 9351453 + ... + 9351584.

It is an arithmetic number, because the mean of its divisors is an integer number (168327342).

Almost surely, 2^1234400442 is an apocalyptic number.

1234400442 is an abundant number, since it is smaller than the sum of its proper divisors (1458837030).

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

1234400442 is a wasteful number, since it uses less digits than its factorization.

1234400442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18703053.

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 1234400442 is about 35134.0353788175. The cubic root of 1234400442 is about 1072.7174766679.

Adding to 1234400442 its reverse (2440044321), we get a palindrome (3674444763).

The spelling of 1234400442 in words is "one billion, two hundred thirty-four million, four hundred thousand, four hundred forty-two".