42401433235421 has 8 divisors (see below), whose sum is σ = 45676823515680. Its totient is φ = 39128006036592.

The previous prime is 42401433235397. The next prime is 42401433235463. The reversal of 42401433235421 is 12453233410424.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42401433235421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42401433238421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 490725491 + ... + 490811888.

It is an arithmetic number, because the mean of its divisors is an integer number (5709602939460).

Almost surely, 2^{42401433235421} is an apocalyptic number.

It is an amenable number.

42401433235421 is a deficient number, since it is larger than the sum of its proper divisors (3275390280259).

42401433235421 is a wasteful number, since it uses less digits than its factorization.

42401433235421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 981540715.

The product of its (nonzero) digits is 276480, while the sum is 38.

Adding to 42401433235421 its reverse (12453233410424), we get a palindrome (54854666645845).

The spelling of 42401433235421 in words is "forty-two trillion, four hundred one billion, four hundred thirty-three million, two hundred thirty-five thousand, four hundred twenty-one".