142244451 has 16 divisors (see below), whose sum is σ = 211000320. Its totient is φ = 94709160.

The previous prime is 142244411. The next prime is 142244483. The reversal of 142244451 is 154442241.

It is not a de Polignac number, because 142244451 - 2⁹ = 142243939 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (142244411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21706 + ... + 27488.

It is an arithmetic number, because the mean of its divisors is an integer number (13187520).

Almost surely, 2^142244451 is an apocalyptic number.

142244451 is a deficient number, since it is larger than the sum of its proper divisors (68755869).

142244451 is an equidigital number, since it uses as much as digits as its factorization.

142244451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6703 (or 6697 counting only the distinct ones).

The product of its digits is 5120, while the sum is 27.

The square root of 142244451 is about 11926.6278134266. The cubic root of 142244451 is about 522.0095453401.

Adding to 142244451 its reverse (154442241), we get a palindrome (296686692).

The spelling of 142244451 in words is "one hundred forty-two million, two hundred forty-four thousand, four hundred fifty-one".