140342730 has 32 divisors (see below), whose sum is σ = 367443648. Its totient is φ = 34022400.

The previous prime is 140342707. The next prime is 140342737. The reversal of 140342730 is 37243041.

It is a self number, because there is not a number n which added to its sum of digits gives 140342730.

It is not an unprimeable number, because it can be changed into a prime (140342737) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 212311 + ... + 212970.

It is an arithmetic number, because the mean of its divisors is an integer number (11482614).

Almost surely, 2^140342730 is an apocalyptic number.

140342730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

140342730 is an abundant number, since it is smaller than the sum of its proper divisors (227100918).

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

140342730 is a wasteful number, since it uses less digits than its factorization.

140342730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425302.

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 140342730 is about 11846.6336990725. The cubic root of 140342730 is about 519.6727847709.

Adding to 140342730 its reverse (37243041), we get a palindrome (177585771).

The spelling of 140342730 in words is "one hundred forty million, three hundred forty-two thousand, seven hundred thirty".