140122464 has 24 divisors (see below), whose sum is σ = 367821720. Its totient is φ = 46707456.

The previous prime is 140122459. The next prime is 140122481. The reversal of 140122464 is 464221041.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 729709 + ... + 729900.

It is an arithmetic number, because the mean of its divisors is an integer number (15325905).

Almost surely, 2^140122464 is an apocalyptic number.

It is an amenable number.

140122464 is an abundant number, since it is smaller than the sum of its proper divisors (227699256).

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

140122464 is a wasteful number, since it uses less digits than its factorization.

140122464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1459622 (or 1459614 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 140122464 is about 11837.3334835173. Note that the first 3 decimals coincide. The cubic root of 140122464 is about 519.4007692978.

The spelling of 140122464 in words is "one hundred forty million, one hundred twenty-two thousand, four hundred sixty-four".