126020740036 has 81 divisors (see below), whose sum is σ = 239993961109. Its totient is φ = 57889581568.

The previous prime is 126020740033. The next prime is 126020740037. The reversal of 126020740036 is 630047020621.

The square root of 126020740036 is 354994.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 13 ways, for example, as 17479484100 + 108541255936 = 132210^2 + 329456^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126020740033) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 639699090 + ... + 639699286.

Almost surely, 2^126020740036 is an apocalyptic number.

126020740036 is the 354994-th square number.

It is an amenable number.

126020740036 is a deficient number, since it is larger than the sum of its proper divisors (113973221073).

126020740036 is an equidigital number, since it uses as much as digits as its factorization.

126020740036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538 (or 269 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 31.

Adding to 126020740036 its reverse (630047020621), we get a palindrome (756067760657).

The spelling of 126020740036 in words is "one hundred twenty-six billion, twenty million, seven hundred forty thousand, thirty-six".