140022144 has 48 divisors (see below), whose sum is σ = 402931620. Its totient is φ = 46673664.

The previous prime is 140022139. The next prime is 140022173. The reversal of 140022144 is 441220041.

140022144 is a `hidden beast` number, since 1 + 400 + 221 + 44 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

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 5 ways as a sum of consecutive naturals, for example, 59622 + ... + 61925.

Almost surely, 2^140022144 is an apocalyptic number.

It is an amenable number.

140022144 is an abundant number, since it is smaller than the sum of its proper divisors (262909476).

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

140022144 is a wasteful number, since it uses less digits than its factorization.

140022144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121567 (or 121552 counting only the distinct ones).

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

The square root of 140022144 is about 11833.0952839906. The cubic root of 140022144 is about 519.2767855488.

Adding to 140022144 its reverse (441220041), we get a palindrome (581242185).

The spelling of 140022144 in words is "one hundred forty million, twenty-two thousand, one hundred forty-four".