42162212122 has 4 divisors (see below), whose sum is σ = 63243318186. Its totient is φ = 21081106060.

The previous prime is 42162212119. The next prime is 42162212137. The reversal of 42162212122 is 22121226124.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 29738657601 + 12423554521 = 172449^2 + 111461^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10540553029 + ... + 10540553032.

Almost surely, 2^42162212122 is an apocalyptic number.

42162212122 is a deficient number, since it is larger than the sum of its proper divisors (21081106064).

42162212122 is a wasteful number, since it uses less digits than its factorization.

42162212122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21081106063.

The product of its digits is 1536, while the sum is 25.

Adding to 42162212122 its reverse (22121226124), we get a palindrome (64283438246).

The spelling of 42162212122 in words is "forty-two billion, one hundred sixty-two million, two hundred twelve thousand, one hundred twenty-two".