140442657390 has 96 divisors (see below), whose sum is σ = 439279326720. Its totient is φ = 30411640512.

The previous prime is 140442657367. The next prime is 140442657391. The reversal of 140442657390 is 93756244041.

140442657390 is a `hidden beast` number, since 14 + 0 + 44 + 26 + 573 + 9 + 0 = 666.

It is a super-2 number, since 2×140442657390² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140442657391) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5854474 + ... + 5878413.

It is an arithmetic number, because the mean of its divisors is an integer number (4575826320).

Almost surely, 2^140442657390 is an apocalyptic number.

140442657390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

140442657390 is an abundant number, since it is smaller than the sum of its proper divisors (298836669330).

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

140442657390 is a wasteful number, since it uses less digits than its factorization.

140442657390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11732926 (or 11732923 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 140442657390 in words is "one hundred forty billion, four hundred forty-two million, six hundred fifty-seven thousand, three hundred ninety".