44021142 has 24 divisors (see below), whose sum is σ = 104050440. Its totient is φ = 13339680.

The previous prime is 44021137. The next prime is 44021183. The reversal of 44021142 is 24112044.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 110967 + ... + 111362.

It is an arithmetic number, because the mean of its divisors is an integer number (4335435).

Almost surely, 2^44021142 is an apocalyptic number.

44021142 is an abundant number, since it is smaller than the sum of its proper divisors (60029298).

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

44021142 is a wasteful number, since it uses less digits than its factorization.

44021142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222348 (or 222345 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 44021142 is about 6634.8430275328. The cubic root of 44021142 is about 353.0913688910.

Adding to 44021142 its reverse (24112044), we get a palindrome (68133186).

The spelling of 44021142 in words is "forty-four million, twenty-one thousand, one hundred forty-two".