400042222041 has 32 divisors (see below), whose sum is σ = 665115522048. Its totient is φ = 207779682240.

The previous prime is 400042221977. The next prime is 400042222057. The reversal of 400042222041 is 140222240004.

It is not a de Polignac number, because 400042222041 - 2⁶ = 400042221977 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 400042221999 and 400042222017.

It is not an unprimeable number, because it can be changed into a prime (400042222091) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1283155 + ... + 1564151.

It is an arithmetic number, because the mean of its divisors is an integer number (20784860064).

Almost surely, 2^400042222041 is an apocalyptic number.

It is an amenable number.

400042222041 is a deficient number, since it is larger than the sum of its proper divisors (265073300007).

400042222041 is a wasteful number, since it uses less digits than its factorization.

400042222041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287181.

The product of its (nonzero) digits is 1024, while the sum is 21.

Adding to 400042222041 its reverse (140222240004), we get a palindrome (540264462045).

The spelling of 400042222041 in words is "four hundred billion, forty-two million, two hundred twenty-two thousand, forty-one".