420011441 has 4 divisors (see below), whose sum is σ = 438272832. Its totient is φ = 401750052.

The previous prime is 420011407. The next prime is 420011447. The reversal of 420011441 is 144110024.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420011441 is a prime.

It is a super-2 number, since 2×420011441² = 352819221141792962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420011447) 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, 9130661 + ... + 9130706.

It is an arithmetic number, because the mean of its divisors is an integer number (109568208).

Almost surely, 2^420011441 is an apocalyptic number.

It is an amenable number.

420011441 is a deficient number, since it is larger than the sum of its proper divisors (18261391).

420011441 is a wasteful number, since it uses less digits than its factorization.

420011441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18261390.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 420011441 is about 20494.1806618367. The cubic root of 420011441 is about 748.8940386751.

Adding to 420011441 its reverse (144110024), we get a palindrome (564121465).

The spelling of 420011441 in words is "four hundred twenty million, eleven thousand, four hundred forty-one".