140137451 has 4 divisors (see below), whose sum is σ = 140163504. Its totient is φ = 140111400.

The previous prime is 140137447. The next prime is 140137469. The reversal of 140137451 is 154731041.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 140137451 - 2² = 140137447 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 140137451.

It is not an unprimeable number, because it can be changed into a prime (140137421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1640 + ... + 16821.

It is an arithmetic number, because the mean of its divisors is an integer number (35040876).

Almost surely, 2^140137451 is an apocalyptic number.

140137451 is a deficient number, since it is larger than the sum of its proper divisors (26053).

140137451 is an equidigital number, since it uses as much as digits as its factorization.

140137451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26052.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 140137451 is about 11837.9665061192. The cubic root of 140137451 is about 519.4192863902.

Adding to 140137451 its reverse (154731041), we get a palindrome (294868492).

The spelling of 140137451 in words is "one hundred forty million, one hundred thirty-seven thousand, four hundred fifty-one".