140404671 has 28 divisors (see below), whose sum is σ = 229661160. Its totient is φ = 85088880.

The previous prime is 140404657. The next prime is 140404681. The reversal of 140404671 is 176404041.

It is not a de Polignac number, because 140404671 - 2¹³ = 140396479 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140404681) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 736 + ... + 16773.

Almost surely, 2^140404671 is an apocalyptic number.

140404671 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

140404671 is a deficient number, since it is larger than the sum of its proper divisors (89256489).

140404671 is an equidigital number, since it uses as much as digits as its factorization.

140404671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17538 (or 17523 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 140404671 is about 11849.2476976389. The cubic root of 140404671 is about 519.7492269624.

The spelling of 140404671 in words is "one hundred forty million, four hundred four thousand, six hundred seventy-one".