100142122 has 24 divisors (see below), whose sum is σ = 161588196. Its totient is φ = 46522944.

The previous prime is 100142117. The next prime is 100142123. The reversal of 100142122 is 221241001.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 82828201 + 17313921 = 9101^2 + 4161^2 .

It is not an unprimeable number, because it can be changed into a prime (100142123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36958 + ... + 39574.

Almost surely, 2^100142122 is an apocalyptic number.

100142122 is a deficient number, since it is larger than the sum of its proper divisors (61446074).

100142122 is a wasteful number, since it uses less digits than its factorization.

100142122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2710 (or 2691 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 100142122 is about 10007.1035769597. The cubic root of 100142122 is about 464.3786699019.

Adding to 100142122 its reverse (221241001), we get a palindrome (321383123).

The spelling of 100142122 in words is "one hundred million, one hundred forty-two thousand, one hundred twenty-two".