421593073542 has 12 divisors (see below), whose sum is σ = 913451659380. Its totient is φ = 140531024508.

The previous prime is 421593073519. The next prime is 421593073553. The reversal of 421593073542 is 245370395124.

It is a happy number.

421593073542 is a `hidden beast` number, since 4 + 2 + 1 + 5 + 9 + 30 + 73 + 542 = 666.

It is a super-3 number, since 3×421593073542³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11710918692 + ... + 11710918727.

It is an arithmetic number, because the mean of its divisors is an integer number (76120971615).

Almost surely, 2^421593073542 is an apocalyptic number.

421593073542 is an abundant number, since it is smaller than the sum of its proper divisors (491858585838).

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

421593073542 is a wasteful number, since it uses less digits than its factorization.

421593073542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23421837427 (or 23421837424 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 45.

The spelling of 421593073542 in words is "four hundred twenty-one billion, five hundred ninety-three million, seventy-three thousand, five hundred forty-two".