126420532533 has 24 divisors (see below), whose sum is σ = 184571524800. Its totient is φ = 83375550720.

The previous prime is 126420532501. The next prime is 126420532547. The reversal of 126420532533 is 335235024621.

126420532533 is a `hidden beast` number, since 1 + 2 + 642 + 0 + 5 + 3 + 2 + 5 + 3 + 3 = 666.

It is not a de Polignac number, because 126420532533 - 2⁵ = 126420532501 is a prime.

It is a super-2 number, since 2×126420532533² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126420532583) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 829893 + ... + 970341.

It is an arithmetic number, because the mean of its divisors is an integer number (7690480200).

Almost surely, 2^126420532533 is an apocalyptic number.

It is an amenable number.

126420532533 is a deficient number, since it is larger than the sum of its proper divisors (58150992267).

126420532533 is a wasteful number, since it uses less digits than its factorization.

126420532533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141529 (or 141526 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 36.

The spelling of 126420532533 in words is "one hundred twenty-six billion, four hundred twenty million, five hundred thirty-two thousand, five hundred thirty-three".