61100142 has 16 divisors (see below), whose sum is σ = 129388752. Its totient is φ = 19168640.

The previous prime is 61100093. The next prime is 61100147. The reversal of 61100142 is 24100116.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61100147) 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, 299409 + ... + 299612.

It is an arithmetic number, because the mean of its divisors is an integer number (8086797).

Almost surely, 2^61100142 is an apocalyptic number.

61100142 is an abundant number, since it is smaller than the sum of its proper divisors (68288610).

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

61100142 is a wasteful number, since it uses less digits than its factorization.

61100142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599043.

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

The square root of 61100142 is about 7816.6579815161. The cubic root of 61100142 is about 393.8650151282.

Adding to 61100142 its reverse (24100116), we get a palindrome (85200258).

The spelling of 61100142 in words is "sixty-one million, one hundred thousand, one hundred forty-two".