424115352421 has 4 divisors (see below), whose sum is σ = 424238323500. Its totient is φ = 423992381344.

The previous prime is 424115352383. The next prime is 424115352439. The reversal of 424115352421 is 124253511424.

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 114883713025 + 309231639396 = 338945^2 + 556086^2 .

It is a cyclic number.

It is not a de Polignac number, because 424115352421 - 2¹³ = 424115344229 is a prime.

It is a super-2 number, since 2×424115352421² (a number of 24 digits) 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 (424115352461) 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, 61480366 + ... + 61487263.

It is an arithmetic number, because the mean of its divisors is an integer number (106059580875).

Almost surely, 2^424115352421 is an apocalyptic number.

It is an amenable number.

424115352421 is a deficient number, since it is larger than the sum of its proper divisors (122971079).

424115352421 is a wasteful number, since it uses less digits than its factorization.

424115352421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122971078.

The product of its digits is 38400, while the sum is 34.

Adding to 424115352421 its reverse (124253511424), we get a palindrome (548368863845).

The spelling of 424115352421 in words is "four hundred twenty-four billion, one hundred fifteen million, three hundred fifty-two thousand, four hundred twenty-one".