40201990042 has 16 divisors (see below), whose sum is σ = 61569123840. Its totient is φ = 19680533392.

The previous prime is 40201990019. The next prime is 40201990069. The reversal of 40201990042 is 24009910204.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 40201989986 and 40201990013.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 345118 + ... + 446665.

It is an arithmetic number, because the mean of its divisors is an integer number (3848070240).

Almost surely, 2^40201990042 is an apocalyptic number.

40201990042 is a deficient number, since it is larger than the sum of its proper divisors (21367133798).

40201990042 is a wasteful number, since it uses less digits than its factorization.

40201990042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 792317.

The product of its (nonzero) digits is 5184, while the sum is 31.

The spelling of 40201990042 in words is "forty billion, two hundred one million, nine hundred ninety thousand, forty-two".