140057491 has 8 divisors (see below), whose sum is σ = 160139360. Its totient is φ = 119994048.

The previous prime is 140057461. The next prime is 140057573. The reversal of 140057491 is 194750041.

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

It is a cyclic number.

It is not a de Polignac number, because 140057491 - 2⁵ = 140057459 is a prime.

It is a super-2 number, since 2×140057491² = 39232201570430162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140057461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21775 + ... + 27463.

It is an arithmetic number, because the mean of its divisors is an integer number (20017420).

Almost surely, 2^140057491 is an apocalyptic number.

140057491 is a deficient number, since it is larger than the sum of its proper divisors (20081869).

140057491 is an equidigital number, since it uses as much as digits as its factorization.

140057491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9213.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 140057491 is about 11834.5887550012. The cubic root of 140057491 is about 519.3204770482.

The spelling of 140057491 in words is "one hundred forty million, fifty-seven thousand, four hundred ninety-one".