140011457 has 2 divisors, whose sum is σ = 140011458. Its totient is φ = 140011456.

The previous prime is 140011429. The next prime is 140011477. The reversal of 140011457 is 754110041.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 137334961 + 2676496 = 11719^2 + 1636^2 .

It is an emirp because it is prime and its reverse (754110041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140011457 - 2⁶ = 140011393 is a prime.

It is not a weakly prime, because it can be changed into another prime (140011477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70005728 + 70005729.

It is an arithmetic number, because the mean of its divisors is an integer number (70005729).

Almost surely, 2^140011457 is an apocalyptic number.

It is an amenable number.

140011457 is a deficient number, since it is larger than the sum of its proper divisors (1).

140011457 is an equidigital number, since it uses as much as digits as its factorization.

140011457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 140011457 is about 11832.6437029093. The cubic root of 140011457 is about 519.2635741809.

Adding to 140011457 its reverse (754110041), we get a palindrome (894121498).

The spelling of 140011457 in words is "one hundred forty million, eleven thousand, four hundred fifty-seven".