126205473634542 has 12 divisors (see below), whose sum is σ = 273445192874880. Its totient is φ = 42068491211508.

The previous prime is 126205473634531. The next prime is 126205473634547. The reversal of 126205473634542 is 245436374502621.

126205473634542 is a `hidden beast` number, since 1 + 2 + 6 + 20 + 5 + 4 + 73 + 6 + 3 + 4 + 542 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126205473634547) 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, 3505707600942 + ... + 3505707600977.

It is an arithmetic number, because the mean of its divisors is an integer number (22787099406240).

Almost surely, 2^{126205473634542} is an apocalyptic number.

126205473634542 is an abundant number, since it is smaller than the sum of its proper divisors (147239719240338).

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

126205473634542 is a wasteful number, since it uses less digits than its factorization.

126205473634542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7011415201927 (or 7011415201924 counting only the distinct ones).

The product of its (nonzero) digits is 29030400, while the sum is 54.

The spelling of 126205473634542 in words is "one hundred twenty-six trillion, two hundred five billion, four hundred seventy-three million, six hundred thirty-four thousand, five hundred forty-two".