4542121622391 has 8 divisors (see below), whose sum is σ = 6058210251504. Its totient is φ = 3027057037440.

The previous prime is 4542121622387. The next prime is 4542121622393. The reversal of 4542121622391 is 1932261212454.

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

It is not a de Polignac number, because 4542121622391 - 2² = 4542121622387 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4542121622393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256000690 + ... + 256018431.

It is an arithmetic number, because the mean of its divisors is an integer number (757276281438).

Almost surely, 2^{4542121622391} is an apocalyptic number.

4542121622391 is a deficient number, since it is larger than the sum of its proper divisors (1516088629113).

4542121622391 is a wasteful number, since it uses less digits than its factorization.

4542121622391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512022081.

The product of its digits is 207360, while the sum is 42.

The spelling of 4542121622391 in words is "four trillion, five hundred forty-two billion, one hundred twenty-one million, six hundred twenty-two thousand, three hundred ninety-one".