101215142 has 16 divisors (see below), whose sum is σ = 177744672. Its totient is φ = 42319680.

The previous prime is 101215141. The next prime is 101215171. The reversal of 101215142 is 241512101.

It is a self number, because there is not a number n which added to its sum of digits gives 101215142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101215141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87593 + ... + 88740.

It is an arithmetic number, because the mean of its divisors is an integer number (11109042).

Almost surely, 2^101215142 is an apocalyptic number.

101215142 is a deficient number, since it is larger than the sum of its proper divisors (76529530).

101215142 is a wasteful number, since it uses less digits than its factorization.

101215142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176383.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 101215142 is about 10060.5736416966. The cubic root of 101215142 is about 466.0313823905.

Adding to 101215142 its reverse (241512101), we get a palindrome (342727243).

The spelling of 101215142 in words is "one hundred one million, two hundred fifteen thousand, one hundred forty-two".