4273621078 has 4 divisors (see below), whose sum is σ = 6410431620. Its totient is φ = 2136810538.

The previous prime is 4273621067. The next prime is 4273621081. The reversal of 4273621078 is 8701263724.

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

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 4273621078.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1068405268 + ... + 1068405271.

It is an arithmetic number, because the mean of its divisors is an integer number (1602607905).

Almost surely, 2^4273621078 is an apocalyptic number.

4273621078 is a deficient number, since it is larger than the sum of its proper divisors (2136810542).

4273621078 is a wasteful number, since it uses less digits than its factorization.

4273621078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2136810541.

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 4273621078 is about 65372.9384225614. The cubic root of 4273621078 is about 1622.8012649474.

The spelling of 4273621078 in words is "four billion, two hundred seventy-three million, six hundred twenty-one thousand, seventy-eight".