140921343 has 8 divisors (see below), whose sum is σ = 208772400. Its totient is φ = 93947544.

The previous prime is 140921327. The next prime is 140921357. The reversal of 140921343 is 343129041.

140921343 is a `hidden beast` number, since 1 + 409 + 213 + 43 = 666.

It is not a de Polignac number, because 140921343 - 2⁴ = 140921327 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 5219309 = 140921343 / (1 + 4 + 0 + 9 + 2 + 1 + 3 + 4 + 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140921393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2609628 + ... + 2609681.

It is an arithmetic number, because the mean of its divisors is an integer number (26096550).

Almost surely, 2^140921343 is an apocalyptic number.

140921343 is a deficient number, since it is larger than the sum of its proper divisors (67851057).

140921343 is an equidigital number, since it uses as much as digits as its factorization.

140921343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5219318 (or 5219312 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 140921343 is about 11871.0295678176. The cubic root of 140921343 is about 520.3859843781.

The spelling of 140921343 in words is "one hundred forty million, nine hundred twenty-one thousand, three hundred forty-three".