4000101421 has 4 divisors (see below), whose sum is σ = 4025579932. Its totient is φ = 3974622912.

The previous prime is 4000101397. The next prime is 4000101431. The reversal of 4000101421 is 1241010004.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1196398921 + 2803702500 = 34589^2 + 52950^2 .

It is a cyclic number.

It is not a de Polignac number, because 4000101421 - 2⁵ = 4000101389 is a prime.

It is a super-2 number, since 2×4000101421² = 32001622756572438482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4000101431) 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, 12739020 + ... + 12739333.

It is an arithmetic number, because the mean of its divisors is an integer number (1006394983).

Almost surely, 2^4000101421 is an apocalyptic number.

It is an amenable number.

4000101421 is a deficient number, since it is larger than the sum of its proper divisors (25478511).

4000101421 is a wasteful number, since it uses less digits than its factorization.

4000101421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25478510.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 4000101421 is about 63246.3550016916. The cubic root of 4000101421 is about 1587.4144681717.

Adding to 4000101421 its reverse (1241010004), we get a palindrome (5241111425).

The spelling of 4000101421 in words is "four billion, one hundred one thousand, four hundred twenty-one".