42224240024261 has 2 divisors, whose sum is σ = 42224240024262. Its totient is φ = 42224240024260.

The previous prime is 42224240024237. The next prime is 42224240024273. The reversal of 42224240024261 is 16242004242224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41229163948036 + 995076076225 = 6420994^2 + 997535^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42224240024261 is a prime.

It is a super-2 number, since 2×42224240024261² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42224240024231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21112120012130 + 21112120012131.

It is an arithmetic number, because the mean of its divisors is an integer number (21112120012131).

Almost surely, 2^{42224240024261} is an apocalyptic number.

It is an amenable number.

42224240024261 is a deficient number, since it is larger than the sum of its proper divisors (1).

42224240024261 is an equidigital number, since it uses as much as digits as its factorization.

42224240024261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 98304, while the sum is 35.

Adding to 42224240024261 its reverse (16242004242224), we get a palindrome (58466244266485).

The spelling of 42224240024261 in words is "forty-two trillion, two hundred twenty-four billion, two hundred forty million, twenty-four thousand, two hundred sixty-one".