42123167698 has 8 divisors (see below), whose sum is σ = 66901501692. Its totient is φ = 19822667136.

The previous prime is 42123167689. The next prime is 42123167701. The reversal of 42123167698 is 89676132124.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 42093497889 + 29669809 = 205167^2 + 5447^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×42123167698² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 619458315 + ... + 619458382.

Almost surely, 2^42123167698 is an apocalyptic number.

42123167698 is a deficient number, since it is larger than the sum of its proper divisors (24778333994).

42123167698 is a wasteful number, since it uses less digits than its factorization.

42123167698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1238916716.

The product of its digits is 870912, while the sum is 49.

The spelling of 42123167698 in words is "forty-two billion, one hundred twenty-three million, one hundred sixty-seven thousand, six hundred ninety-eight".