126634221 has 48 divisors (see below), whose sum is σ = 223475200. Its totient is φ = 67487904.

The previous prime is 126634219. The next prime is 126634223. The reversal of 126634221 is 122436621.

126634221 is a `hidden beast` number, since 1 + 2 + 6 + 634 + 2 + 21 = 666.

It is an interprime number because it is at equal distance from previous prime (126634219) and next prime (126634223).

It is not a de Polignac number, because 126634221 - 2¹ = 126634219 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126634223) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 79410 + ... + 80988.

Almost surely, 2^126634221 is an apocalyptic number.

It is an amenable number.

126634221 is a deficient number, since it is larger than the sum of its proper divisors (96840979).

126634221 is a wasteful number, since it uses less digits than its factorization.

126634221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1678 (or 1675 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 126634221 is about 11253.1871485371. The cubic root of 126634221 is about 502.1695339625.

The spelling of 126634221 in words is "one hundred twenty-six million, six hundred thirty-four thousand, two hundred twenty-one".