142444312 has 8 divisors (see below), whose sum is σ = 267083100. Its totient is φ = 71222152.

The previous prime is 142444303. The next prime is 142444319. The reversal of 142444312 is 213444241.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-4 number, since 4×142444312⁴ (a number of 34 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142444319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8902762 + ... + 8902777.

Almost surely, 2^142444312 is an apocalyptic number.

It is an amenable number.

142444312 is a deficient number, since it is larger than the sum of its proper divisors (124638788).

142444312 is a wasteful number, since it uses less digits than its factorization.

142444312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17805545 (or 17805541 counting only the distinct ones).

The product of its digits is 3072, while the sum is 25.

The square root of 142444312 is about 11935.0036447418. The cubic root of 142444312 is about 522.2539146268.

Adding to 142444312 its reverse (213444241), we get a palindrome (355888553).

The spelling of 142444312 in words is "one hundred forty-two million, four hundred forty-four thousand, three hundred twelve".