4000253421 has 8 divisors (see below), whose sum is σ = 5334014880. Its totient is φ = 2666663792.

The previous prime is 4000253399. The next prime is 4000253429. The reversal of 4000253421 is 1243520004.

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

It is a cyclic number.

It is not a de Polignac number, because 4000253421 - 2⁹ = 4000252909 is a prime.

It is a super-5 number, since 5×4000253421⁵ (a number of 49 digits) contains 55555 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4000253429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28210 + ... + 93788.

It is an arithmetic number, because the mean of its divisors is an integer number (666751860).

Almost surely, 2^4000253421 is an apocalyptic number.

It is an amenable number.

4000253421 is a deficient number, since it is larger than the sum of its proper divisors (1333761459).

4000253421 is a wasteful number, since it uses less digits than its factorization.

4000253421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85915.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 4000253421 is about 63247.5566405533. The cubic root of 4000253421 is about 1587.4345746571.

Adding to 4000253421 its reverse (1243520004), we get a palindrome (5243773425).

The spelling of 4000253421 in words is "four billion, two hundred fifty-three thousand, four hundred twenty-one".