405106042938 has 16 divisors (see below), whose sum is σ = 829054227936. Its totient is φ = 131894990640.

The previous prime is 405106042907. The next prime is 405106042949. The reversal of 405106042938 is 839240601504.

It is a super-2 number, since 2×405106042938² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 405106042938.

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 7 ways as a sum of consecutive naturals, for example, 785088973 + ... + 785089488.

It is an arithmetic number, because the mean of its divisors is an integer number (51815889246).

Almost surely, 2^405106042938 is an apocalyptic number.

405106042938 is an abundant number, since it is smaller than the sum of its proper divisors (423948184998).

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

405106042938 is a wasteful number, since it uses less digits than its factorization.

405106042938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1570178509.

The product of its (nonzero) digits is 207360, while the sum is 42.

The spelling of 405106042938 in words is "four hundred five billion, one hundred six million, forty-two thousand, nine hundred thirty-eight".