140436423 has 40 divisors (see below), whose sum is σ = 220262592. Its totient is φ = 89066304.

The previous prime is 140436407. The next prime is 140436427. The reversal of 140436423 is 324634041.

140436423 is a `hidden beast` number, since 14 + 0 + 4 + 3 + 642 + 3 = 666.

It is not a de Polignac number, because 140436423 - 2⁴ = 140436407 is a prime.

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 (140436427) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 140361 + ... + 141357.

Almost surely, 2^140436423 is an apocalyptic number.

140436423 is a deficient number, since it is larger than the sum of its proper divisors (79826169).

140436423 is an equidigital number, since it uses as much as digits as its factorization.

140436423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1093 (or 1084 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 140436423 is about 11850.5874537932. The cubic root of 140436423 is about 519.7884038014.

The spelling of 140436423 in words is "one hundred forty million, four hundred thirty-six thousand, four hundred twenty-three".