542330401421 has 4 divisors (see below), whose sum is σ = 542334636000. Its totient is φ = 542326166844.

The previous prime is 542330401411. The next prime is 542330401427. The reversal of 542330401421 is 124104033245.

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, and also an emirpimes, since its reverse is a distinct semiprime: 124104033245 = 5 ⋅24820806649.

It is a cyclic number.

It is not a de Polignac number, because 542330401421 - 2¹⁸ = 542330139277 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 (542330401427) 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, 1918991 + ... + 2183388.

It is an arithmetic number, because the mean of its divisors is an integer number (135583659000).

Almost surely, 2^542330401421 is an apocalyptic number.

It is an amenable number.

542330401421 is a deficient number, since it is larger than the sum of its proper divisors (4234579).

542330401421 is a wasteful number, since it uses less digits than its factorization.

542330401421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4234578.

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 542330401421 its reverse (124104033245), we get a palindrome (666434434666).

The spelling of 542330401421 in words is "five hundred forty-two billion, three hundred thirty million, four hundred one thousand, four hundred twenty-one".