140333257 has 4 divisors (see below), whose sum is σ = 140443920. Its totient is φ = 140222596.

The previous prime is 140333251. The next prime is 140333269. The reversal of 140333257 is 752333041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 752333041 = 571 ⋅1317571.

It is a cyclic number.

It is not a de Polignac number, because 140333257 - 2⁷ = 140333129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140333251) 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, 53407 + ... + 55972.

It is an arithmetic number, because the mean of its divisors is an integer number (35110980).

Almost surely, 2^140333257 is an apocalyptic number.

It is an amenable number.

140333257 is a deficient number, since it is larger than the sum of its proper divisors (110663).

140333257 is a wasteful number, since it uses less digits than its factorization.

140333257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110662.

The product of its (nonzero) digits is 7560, while the sum is 28.

The square root of 140333257 is about 11846.2338741053. The cubic root of 140333257 is about 519.6610920359.

Adding to 140333257 its reverse (752333041), we get a palindrome (892666298).

The spelling of 140333257 in words is "one hundred forty million, three hundred thirty-three thousand, two hundred fifty-seven".