140254399 has 4 divisors (see below), whose sum is σ = 143675280. Its totient is φ = 136833520.

The previous prime is 140254397. The next prime is 140254417. The reversal of 140254399 is 993452041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 993452041 = 23 ⋅43193567.

It is a cyclic number.

It is not a de Polignac number, because 140254399 - 2¹ = 140254397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140254393) 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, 1710379 + ... + 1710460.

It is an arithmetic number, because the mean of its divisors is an integer number (35918820).

Almost surely, 2^140254399 is an apocalyptic number.

140254399 is a deficient number, since it is larger than the sum of its proper divisors (3420881).

140254399 is an equidigital number, since it uses as much as digits as its factorization.

140254399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3420880.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 140254399 is about 11842.9050067963. The cubic root of 140254399 is about 519.5637354207.

The spelling of 140254399 in words is "one hundred forty million, two hundred fifty-four thousand, three hundred ninety-nine".