4201421243 has 4 divisors (see below), whose sum is σ = 4203836208. Its totient is φ = 4199006280.

The previous prime is 4201421219. The next prime is 4201421251. The reversal of 4201421243 is 3421241024.

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

It is a cyclic number.

It is not a de Polignac number, because 4201421243 - 2¹⁰ = 4201420219 is a prime.

It is a super-2 number, since 2×4201421243² = 35303880922263330098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4201421443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1204871 + ... + 1208352.

It is an arithmetic number, because the mean of its divisors is an integer number (1050959052).

Almost surely, 2^4201421243 is an apocalyptic number.

4201421243 is a deficient number, since it is larger than the sum of its proper divisors (2414965).

4201421243 is a wasteful number, since it uses less digits than its factorization.

4201421243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2414964.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 4201421243 is about 64818.3711844104. The cubic root of 4201421243 is about 1613.6106155139.

Adding to 4201421243 its reverse (3421241024), we get a palindrome (7622662267).

The spelling of 4201421243 in words is "four billion, two hundred one million, four hundred twenty-one thousand, two hundred forty-three".