140520254 has 32 divisors (see below), whose sum is σ = 250283520. Its totient is φ = 57893472.

The previous prime is 140520251. The next prime is 140520277. The reversal of 140520254 is 452025041.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140520251) 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, 114287 + ... + 115509.

It is an arithmetic number, because the mean of its divisors is an integer number (7821360).

Almost surely, 2^140520254 is an apocalyptic number.

140520254 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

140520254 is a deficient number, since it is larger than the sum of its proper divisors (109763266).

140520254 is a wasteful number, since it uses less digits than its factorization.

140520254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1544.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 140520254 is about 11854.1239237659. The cubic root of 140520254 is about 519.8918093456.

Adding to 140520254 its reverse (452025041), we get a palindrome (592545295).

The spelling of 140520254 in words is "one hundred forty million, five hundred twenty thousand, two hundred fifty-four".