140442691440 has 80 divisors (see below), whose sum is σ = 435414551328. Its totient is φ = 37447753728.

The previous prime is 140442691439. The next prime is 140442691463. The reversal of 140442691440 is 44196244041.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×140442691440² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3231132 + ... + 3274308.

Almost surely, 2^140442691440 is an apocalyptic number.

140442691440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140442691440 is an abundant number, since it is smaller than the sum of its proper divisors (294971859888).

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

140442691440 is a wasteful number, since it uses less digits than its factorization.

140442691440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56746 (or 56740 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 39.

The spelling of 140442691440 in words is "one hundred forty billion, four hundred forty-two million, six hundred ninety-one thousand, four hundred forty".