142452224 has 20 divisors (see below), whose sum is σ = 284627244. Its totient is φ = 71225856.

The previous prime is 142452187. The next prime is 142452241. The reversal of 142452224 is 422254241.

It is a super-2 number, since 2×142452224² = 40585272245092352, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 142452193 and 142452202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 138602 + ... + 139625.

Almost surely, 2^142452224 is an apocalyptic number.

It is an amenable number.

142452224 is a deficient number, since it is larger than the sum of its proper divisors (142175020).

142452224 is an frugal number, since it uses more digits than its factorization.

142452224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278245 (or 278229 counting only the distinct ones).

The product of its digits is 5120, while the sum is 26.

The square root of 142452224 is about 11935.3351021243. The cubic root of 142452224 is about 522.2635838943.

The spelling of 142452224 in words is "one hundred forty-two million, four hundred fifty-two thousand, two hundred twenty-four".