1864426042 has 8 divisors (see below), whose sum is σ = 2796880500. Its totient is φ = 932132544.

The previous prime is 1864426027. The next prime is 1864426073. The reversal of 1864426042 is 2406244681.

It is a happy number.

It is a Cunningham number, because it is equal to 43179²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 1864426041 + 1 = 43179^2 + 1^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1864425992 and 1864426010.

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, 5167 + ... + 61282.

Almost surely, 2^1864426042 is an apocalyptic number.

1864426042 is a deficient number, since it is larger than the sum of its proper divisors (932454458).

1864426042 is a wasteful number, since it uses less digits than its factorization.

1864426042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80480.

The product of its (nonzero) digits is 73728, while the sum is 37.

The square root of 1864426042 is about 43179.0000115797. Note that the first 4 decimals coincide. The cubic root of 1864426042 is about 1230.7836551068.

The spelling of 1864426042 in words is "one billion, eight hundred sixty-four million, four hundred twenty-six thousand, forty-two".