126220428 has 18 divisors (see below), whose sum is σ = 319057284. Its totient is φ = 42073464.

The previous prime is 126220421. The next prime is 126220469. The reversal of 126220428 is 824022621.

It is a happy number.

126220428 is a `hidden beast` number, since 12 + 6 + 220 + 428 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (126220421) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1753026 + ... + 1753097.

Almost surely, 2^126220428 is an apocalyptic number.

126220428 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

126220428 is an abundant number, since it is smaller than the sum of its proper divisors (192836856).

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

126220428 is a wasteful number, since it uses less digits than its factorization.

126220428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3506133 (or 3506128 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 126220428 is about 11234.7865133255. The cubic root of 126220428 is about 501.6219700701.

The spelling of 126220428 in words is "one hundred twenty-six million, two hundred twenty thousand, four hundred twenty-eight".