140253842 has 8 divisors (see below), whose sum is σ = 222756156. Its totient is φ = 66001792.

The previous prime is 140253833. The next prime is 140253853. The reversal of 140253842 is 248352041.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 110649361 + 29604481 = 10519^2 + 5441^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×140253842² = 39342280391521928, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 2062523 + ... + 2062590.

Almost surely, 2^140253842 is an apocalyptic number.

140253842 is a deficient number, since it is larger than the sum of its proper divisors (82502314).

140253842 is a wasteful number, since it uses less digits than its factorization.

140253842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4125132.

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 140253842 is about 11842.8814905833. The cubic root of 140253842 is about 519.5630476291.

The spelling of 140253842 in words is "one hundred forty million, two hundred fifty-three thousand, eight hundred forty-two".