140402423 has 8 divisors (see below), whose sum is σ = 162049440. Its totient is φ = 119152800.

The previous prime is 140402417. The next prime is 140402443. The reversal of 140402423 is 324204041.

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 140402423 - 2¹² = 140398327 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 140402395 and 140402404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140402413) 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, 98588 + ... + 100001.

It is an arithmetic number, because the mean of its divisors is an integer number (20256180).

Almost surely, 2^140402423 is an apocalyptic number.

140402423 is a deficient number, since it is larger than the sum of its proper divisors (21647017).

140402423 is a wasteful number, since it uses less digits than its factorization.

140402423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198697.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 140402423 is about 11849.1528389164. The cubic root of 140402423 is about 519.7464530696.

Adding to 140402423 its reverse (324204041), we get a palindrome (464606464).

The spelling of 140402423 in words is "one hundred forty million, four hundred two thousand, four hundred twenty-three".