20541906042 has 32 divisors (see below), whose sum is σ = 46959925632. Its totient is φ = 5868241344.

The previous prime is 20541906017. The next prime is 20541906079. The reversal of 20541906042 is 24060914502.

It is a super-2 number, since 2×20541906042² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20541905994 and 20541906012.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 281328 + ... + 346740.

It is an arithmetic number, because the mean of its divisors is an integer number (1467497676).

Almost surely, 2^20541906042 is an apocalyptic number.

20541906042 is an abundant number, since it is smaller than the sum of its proper divisors (26418019590).

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

20541906042 is a wasteful number, since it uses less digits than its factorization.

20541906042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72902.

The product of its (nonzero) digits is 17280, while the sum is 33.

The spelling of 20541906042 in words is "twenty billion, five hundred forty-one million, nine hundred six thousand, forty-two".