7940257126 has 16 divisors (see below), whose sum is σ = 11957008896. Its totient is φ = 3954613896.

The previous prime is 7940257123. The next prime is 7940257141. The reversal of 7940257126 is 6217520497.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7940257123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 659775 + ... + 671701.

It is an arithmetic number, because the mean of its divisors is an integer number (747313056).

Almost surely, 2^7940257126 is an apocalyptic number.

7940257126 is a deficient number, since it is larger than the sum of its proper divisors (4016751770).

7940257126 is a wasteful number, since it uses less digits than its factorization.

7940257126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13203.

The product of its (nonzero) digits is 211680, while the sum is 43.

The square root of 7940257126 is about 89108.1204268163. The cubic root of 7940257126 is about 1995.0089823989.

The spelling of 7940257126 in words is "seven billion, nine hundred forty million, two hundred fifty-seven thousand, one hundred twenty-six".