140075730 has 40 divisors (see below), whose sum is σ = 376650252. Its totient is φ = 37353312.

The previous prime is 140075729. The next prime is 140075737. The reversal of 140075730 is 37570041.

It can be written as a sum of positive squares in 2 ways, for example, as 139216401 + 859329 = 11799^2 + 927^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 140075694 and 140075703.

It is not an unprimeable number, because it can be changed into a prime (140075737) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 85657 + ... + 87276.

Almost surely, 2^140075730 is an apocalyptic number.

140075730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

140075730 is an abundant number, since it is smaller than the sum of its proper divisors (236574522).

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

140075730 is a wasteful number, since it uses less digits than its factorization.

140075730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172952 (or 172943 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 140075730 is about 11835.3593101350. The cubic root of 140075730 is about 519.3430189225.

The spelling of 140075730 in words is "one hundred forty million, seventy-five thousand, seven hundred thirty".