101145042 has 12 divisors (see below), whose sum is σ = 219147630. Its totient is φ = 33715008.

The previous prime is 101144983. The next prime is 101145047. The reversal of 101145042 is 240541101.

It can be written as a sum of positive squares in only one way, i.e., 93141801 + 8003241 = 9651^2 + 2829^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 5619169 = 101145042 / (1 + 0 + 1 + 1 + 4 + 5 + 0 + 4 + 2).

It is not an unprimeable number, because it can be changed into a prime (101145047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2809567 + ... + 2809602.

Almost surely, 2^101145042 is an apocalyptic number.

101145042 is an abundant number, since it is smaller than the sum of its proper divisors (118002588).

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

101145042 is a wasteful number, since it uses less digits than its factorization.

101145042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5619177 (or 5619174 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 101145042 is about 10057.0891414962. The cubic root of 101145042 is about 465.9237688980.

Adding to 101145042 its reverse (240541101), we get a palindrome (341686143).

The spelling of 101145042 in words is "one hundred one million, one hundred forty-five thousand, forty-two".