142031228 has 6 divisors (see below), whose sum is σ = 248554656. Its totient is φ = 71015612.

The previous prime is 142031207. The next prime is 142031249. The reversal of 142031228 is 822130241.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (142031207) and next prime (142031249).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17753900 + ... + 17753907.

It is an arithmetic number, because the mean of its divisors is an integer number (41425776).

Almost surely, 2^142031228 is an apocalyptic number.

It is an amenable number.

142031228 is a deficient number, since it is larger than the sum of its proper divisors (106523428).

142031228 is a wasteful number, since it uses less digits than its factorization.

142031228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35507811 (or 35507809 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 142031228 is about 11917.6855135551. The cubic root of 142031228 is about 521.7485858870.

Adding to 142031228 its reverse (822130241), we get a palindrome (964161469).

The spelling of 142031228 in words is "one hundred forty-two million, thirty-one thousand, two hundred twenty-eight".