126641540 has 12 divisors (see below), whose sum is σ = 265947276. Its totient is φ = 50656608.

The previous prime is 126641531. The next prime is 126641549. The reversal of 126641540 is 45146621.

It is an interprime number because it is at equal distance from previous prime (126641531) and next prime (126641549).

It can be written as a sum of positive squares in 2 ways, for example, as 96786244 + 29855296 = 9838^2 + 5464^2 .

It is not an unprimeable number, because it can be changed into a prime (126641549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3166019 + ... + 3166058.

It is an arithmetic number, because the mean of its divisors is an integer number (22162273).

Almost surely, 2^126641540 is an apocalyptic number.

126641540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126641540 is an abundant number, since it is smaller than the sum of its proper divisors (139305736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126641540 is a wasteful number, since it uses less digits than its factorization.

126641540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6332086 (or 6332084 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 126641540 is about 11253.5123405984. The cubic root of 126641540 is about 502.1792083037.

The spelling of 126641540 in words is "one hundred twenty-six million, six hundred forty-one thousand, five hundred forty".