126541640 has 16 divisors (see below), whose sum is σ = 284718780. Its totient is φ = 50616640.

The previous prime is 126541609. The next prime is 126541643. The reversal of 126541640 is 46145621.

It can be written as a sum of positive squares in 2 ways, for example, as 123520996 + 3020644 = 11114^2 + 1738^2 .

It is not an unprimeable number, because it can be changed into a prime (126541643) 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, 1581731 + ... + 1581810.

Almost surely, 2^126541640 is an apocalyptic number.

126541640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126541640 is an abundant number, since it is smaller than the sum of its proper divisors (158177140).

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

126541640 is a wasteful number, since it uses less digits than its factorization.

126541640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3163552 (or 3163548 counting only the distinct ones).

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

The square root of 126541640 is about 11249.0728506842. The cubic root of 126541640 is about 502.0471271026.

The spelling of 126541640 in words is "one hundred twenty-six million, five hundred forty-one thousand, six hundred forty".