406142222 has 16 divisors (see below), whose sum is σ = 630010752. Its totient is φ = 196162560.

The previous prime is 406142179. The next prime is 406142237. The reversal of 406142222 is 222241604.

It is a congruent number.

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, 30098 + ... + 41450.

It is an arithmetic number, because the mean of its divisors is an integer number (39375672).

Almost surely, 2^406142222 is an apocalyptic number.

406142222 is a deficient number, since it is larger than the sum of its proper divisors (223868530).

406142222 is a wasteful number, since it uses less digits than its factorization.

406142222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11963.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 406142222 is about 20152.9705502688. The cubic root of 406142222 is about 740.5585155344.

Adding to 406142222 its reverse (222241604), we get a palindrome (628383826).

The spelling of 406142222 in words is "four hundred six million, one hundred forty-two thousand, two hundred twenty-two".