101312442 has 96 divisors (see below), whose sum is σ = 278014464. Its totient is φ = 25898400.

The previous prime is 101312437. The next prime is 101312461. The reversal of 101312442 is 244213101.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 92317 + ... + 93407.

It is an arithmetic number, because the mean of its divisors is an integer number (2895984).

Almost surely, 2^101312442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 101312442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139007232).

101312442 is an abundant number, since it is smaller than the sum of its proper divisors (176702022).

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

101312442 is a wasteful number, since it uses less digits than its factorization.

101312442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1184 (or 1181 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 101312442 is about 10065.4081884442. The cubic root of 101312442 is about 466.1806694440.

Adding to 101312442 its reverse (244213101), we get a palindrome (345525543).

The spelling of 101312442 in words is "one hundred one million, three hundred twelve thousand, four hundred forty-two".