126375001257 has 16 divisors (see below), whose sum is σ = 168982880832. Its totient is φ = 84008886720.

The previous prime is 126375001253. The next prime is 126375001261. The reversal of 126375001257 is 752100573621.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (126375001253) and next prime (126375001261).

It is not a de Polignac number, because 126375001257 - 2² = 126375001253 is a prime.

It is a super-3 number, since 3×126375001257³ (a number of 34 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (126375001253) 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, 1542507 + ... + 1622367.

It is an arithmetic number, because the mean of its divisors is an integer number (10561430052).

Almost surely, 2^126375001257 is an apocalyptic number.

It is an amenable number.

126375001257 is a deficient number, since it is larger than the sum of its proper divisors (42607879575).

126375001257 is an equidigital number, since it uses as much as digits as its factorization.

126375001257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81368.

The product of its (nonzero) digits is 88200, while the sum is 39.

Adding to 126375001257 its reverse (752100573621), we get a palindrome (878475574878).

The spelling of 126375001257 in words is "one hundred twenty-six billion, three hundred seventy-five million, one thousand, two hundred fifty-seven".