4221251726 has 4 divisors (see below), whose sum is σ = 6331877592. Its totient is φ = 2110625862.

The previous prime is 4221251711. The next prime is 4221251747. The reversal of 4221251726 is 6271521224.

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

It is a super-2 number, since 2×4221251726² = 35637932268515958152, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4221251692 and 4221251701.

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, 1055312930 + ... + 1055312933.

It is an arithmetic number, because the mean of its divisors is an integer number (1582969398).

Almost surely, 2^4221251726 is an apocalyptic number.

4221251726 is a deficient number, since it is larger than the sum of its proper divisors (2110625866).

4221251726 is a wasteful number, since it uses less digits than its factorization.

4221251726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2110625865.

The product of its digits is 13440, while the sum is 32.

The square root of 4221251726 is about 64971.1607253557. The cubic root of 4221251726 is about 1616.1453502790.

The spelling of 4221251726 in words is "four billion, two hundred twenty-one million, two hundred fifty-one thousand, seven hundred twenty-six".