142551222 has 32 divisors (see below), whose sum is σ = 329318784. Its totient is φ = 40656000.

The previous prime is 142551221. The next prime is 142551229. The reversal of 142551222 is 222155241.

It is a junction number, because it is equal to n+sod(n) for n = 142551192 and 142551201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142551221) 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, 62404 + ... + 64647.

It is an arithmetic number, because the mean of its divisors is an integer number (10291212).

Almost surely, 2^142551222 is an apocalyptic number.

142551222 is an abundant number, since it is smaller than the sum of its proper divisors (186767562).

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

142551222 is a wasteful number, since it uses less digits than its factorization.

142551222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127084.

The product of its digits is 1600, while the sum is 24.

The square root of 142551222 is about 11939.4816470398. The cubic root of 142551222 is about 522.3845392488.

The spelling of 142551222 in words is "one hundred forty-two million, five hundred fifty-one thousand, two hundred twenty-two".