140402740 has 24 divisors (see below), whose sum is σ = 301704480. Its totient is φ = 54854688.

The previous prime is 140402729. The next prime is 140402789. The reversal of 140402740 is 47204041.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80770 + ... + 82489.

It is an arithmetic number, because the mean of its divisors is an integer number (12571020).

Almost surely, 2^140402740 is an apocalyptic number.

140402740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140402740 is an abundant number, since it is smaller than the sum of its proper divisors (161301740).

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

140402740 is a wasteful number, since it uses less digits than its factorization.

140402740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163311 (or 163309 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 22.

The square root of 140402740 is about 11849.1662153925. The cubic root of 140402740 is about 519.7468442298.

Adding to 140402740 its reverse (47204041), we get a palindrome (187606781).

The spelling of 140402740 in words is "one hundred forty million, four hundred two thousand, seven hundred forty".