140868453 has 16 divisors (see below), whose sum is σ = 205880832. Its totient is φ = 84966000.

The previous prime is 140868449. The next prime is 140868461. The reversal of 140868453 is 354868041.

It is not a de Polignac number, because 140868453 - 2² = 140868449 is a prime.

It is a super-2 number, since 2×140868453² = 39687842101226418, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140868463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3153 + ... + 17078.

It is an arithmetic number, because the mean of its divisors is an integer number (12867552).

Almost surely, 2^140868453 is an apocalyptic number.

It is an amenable number.

140868453 is a deficient number, since it is larger than the sum of its proper divisors (65012379).

140868453 is a wasteful number, since it uses less digits than its factorization.

140868453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20456.

The product of its (nonzero) digits is 92160, while the sum is 39.

The square root of 140868453 is about 11868.8016665542. The cubic root of 140868453 is about 520.3208732125.

The spelling of 140868453 in words is "one hundred forty million, eight hundred sixty-eight thousand, four hundred fifty-three".