101231142 has 16 divisors (see below), whose sum is σ = 211265280. Its totient is φ = 32276552.

The previous prime is 101231131. The next prime is 101231191. The reversal of 101231142 is 241132101.

It is a super-2 number, since 2×101231142² = 20495488221248328, which contains 22 as substring.

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, 366642 + ... + 366917.

It is an arithmetic number, because the mean of its divisors is an integer number (13204080).

Almost surely, 2^101231142 is an apocalyptic number.

101231142 is an abundant number, since it is smaller than the sum of its proper divisors (110034138).

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

101231142 is a wasteful number, since it uses less digits than its factorization.

101231142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733587.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 101231142 is about 10061.3687935589. The cubic root of 101231142 is about 466.0559377060.

Adding to 101231142 its reverse (241132101), we get a palindrome (342363243).

The spelling of 101231142 in words is "one hundred one million, two hundred thirty-one thousand, one hundred forty-two".