43101421 has 4 divisors (see below), whose sum is σ = 47019744. Its totient is φ = 39183100.

The previous prime is 43101403. The next prime is 43101427. The reversal of 43101421 is 12410134.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 43101421 - 2⁵ = 43101389 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43101395 and 43101404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43101427) 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, 1959145 + ... + 1959166.

It is an arithmetic number, because the mean of its divisors is an integer number (11754936).

Almost surely, 2^43101421 is an apocalyptic number.

It is an amenable number.

43101421 is a deficient number, since it is larger than the sum of its proper divisors (3918323).

43101421 is a wasteful number, since it uses less digits than its factorization.

43101421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3918322.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 43101421 is about 6565.1672484408. The cubic root of 43101421 is about 350.6150301827.

Adding to 43101421 its reverse (12410134), we get a palindrome (55511555).

The spelling of 43101421 in words is "forty-three million, one hundred one thousand, four hundred twenty-one".