140051405 has 16 divisors (see below), whose sum is σ = 183544704. Its totient is φ = 101962560.

The previous prime is 140051383. The next prime is 140051447. The reversal of 140051405 is 504150041.

It is not a de Polignac number, because 140051405 - 2⁶ = 140051341 is a prime.

It is a super-2 number, since 2×140051405² = 39228792084948050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10559 + ... + 19788.

It is an arithmetic number, because the mean of its divisors is an integer number (11471544).

Almost surely, 2^140051405 is an apocalyptic number.

It is an amenable number.

140051405 is a deficient number, since it is larger than the sum of its proper divisors (43493299).

140051405 is a wasteful number, since it uses less digits than its factorization.

140051405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30436.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 140051405 is about 11834.3316245574. The cubic root of 140051405 is about 519.3129548272.

The spelling of 140051405 in words is "one hundred forty million, fifty-one thousand, four hundred five".