126840900 has 36 divisors (see below), whose sum is σ = 366993872. Its totient is φ = 33824160.

The previous prime is 126840887. The next prime is 126840907. The reversal of 126840900 is 9048621.

126840900 = T₁₃ + T₁₄ + ... + T₉₁₂.

It is a super-2 number, since 2×126840900² = 32177227825620000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (126840907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 211102 + ... + 211701.

Almost surely, 2^126840900 is an apocalyptic number.

126840900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126840900 is an abundant number, since it is smaller than the sum of its proper divisors (240152972).

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

126840900 is a wasteful number, since it uses less digits than its factorization.

126840900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422820 (or 422813 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 126840900 is about 11262.3665363901. The cubic root of 126840900 is about 502.4425814940.

The spelling of 126840900 in words is "one hundred twenty-six million, eight hundred forty thousand, nine hundred".