4021001423 has 4 divisors (see below), whose sum is σ = 4114513128. Its totient is φ = 3927489720.

The previous prime is 4021001419. The next prime is 4021001429. The reversal of 4021001423 is 3241001204.

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 4021001423 - 2² = 4021001419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4021001429) 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, 46755788 + ... + 46755873.

It is an arithmetic number, because the mean of its divisors is an integer number (1028628282).

Almost surely, 2^4021001423 is an apocalyptic number.

4021001423 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

4021001423 is a deficient number, since it is larger than the sum of its proper divisors (93511705).

4021001423 is an equidigital number, since it uses as much as digits as its factorization.

4021001423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93511704.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 4021001423 is about 63411.3666703376. The cubic root of 4021001423 is about 1590.1743441064.

Adding to 4021001423 its reverse (3241001204), we get a palindrome (7262002627).

The spelling of 4021001423 in words is "four billion, twenty-one million, one thousand, four hundred twenty-three".