1442400312 has 32 divisors (see below), whose sum is σ = 3610400400. Its totient is φ = 480213504.

The previous prime is 1442400307. The next prime is 1442400319. The reversal of 1442400312 is 2130042441.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1442400319) 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, 16353 + ... + 56144.

Almost surely, 2^1442400312 is an apocalyptic number.

1442400312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1442400312 is an abundant number, since it is smaller than the sum of its proper divisors (2168000088).

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

1442400312 is a wasteful number, since it uses less digits than its factorization.

1442400312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73335 (or 73331 counting only the distinct ones).

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

The square root of 1442400312 is about 37978.9456409732. The cubic root of 1442400312 is about 1129.8703252663.

Adding to 1442400312 its reverse (2130042441), we get a palindrome (3572442753).

The spelling of 1442400312 in words is "one billion, four hundred forty-two million, four hundred thousand, three hundred twelve".