124340142457 has 2 divisors, whose sum is σ = 124340142458. Its totient is φ = 124340142456.

The previous prime is 124340142413. The next prime is 124340142469. The reversal of 124340142457 is 754241043421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103146314896 + 21193827561 = 321164^2 + 145581^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-124340142457 is a prime.

It is not a weakly prime, because it can be changed into another prime (124340142257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62170071228 + 62170071229.

It is an arithmetic number, because the mean of its divisors is an integer number (62170071229).

Almost surely, 2^124340142457 is an apocalyptic number.

It is an amenable number.

124340142457 is a deficient number, since it is larger than the sum of its proper divisors (1).

124340142457 is an equidigital number, since it uses as much as digits as its factorization.

124340142457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 107520, while the sum is 37.

Adding to 124340142457 its reverse (754241043421), we get a palindrome (878581185878).

The spelling of 124340142457 in words is "one hundred twenty-four billion, three hundred forty million, one hundred forty-two thousand, four hundred fifty-seven".