142218452 has 24 divisors (see below), whose sum is σ = 257467392. Its totient is φ = 68666400.

The previous prime is 142218449. The next prime is 142218469. The reversal of 142218452 is 254812241.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75077 + ... + 76947.

It is an arithmetic number, because the mean of its divisors is an integer number (10727808).

Almost surely, 2^142218452 is an apocalyptic number.

It is an amenable number.

142218452 is a deficient number, since it is larger than the sum of its proper divisors (115248940).

142218452 is a wasteful number, since it uses less digits than its factorization.

142218452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2519 (or 2517 counting only the distinct ones).

The product of its digits is 5120, while the sum is 29.

The square root of 142218452 is about 11925.5378075792. The cubic root of 142218452 is about 521.9777396398.

The spelling of 142218452 in words is "one hundred forty-two million, two hundred eighteen thousand, four hundred fifty-two".