42420142454 has 4 divisors (see below), whose sum is σ = 63630213684. Its totient is φ = 21210071226.

The previous prime is 42420142447. The next prime is 42420142477. The reversal of 42420142454 is 45424102424.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 42420142454.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10605035612 + ... + 10605035615.

It is an arithmetic number, because the mean of its divisors is an integer number (15907553421).

Almost surely, 2^42420142454 is an apocalyptic number.

42420142454 is a deficient number, since it is larger than the sum of its proper divisors (21210071230).

42420142454 is a wasteful number, since it uses less digits than its factorization.

42420142454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21210071229.

The product of its (nonzero) digits is 40960, while the sum is 32.

Adding to 42420142454 its reverse (45424102424), we get a palindrome (87844244878).

The spelling of 42420142454 in words is "forty-two billion, four hundred twenty million, one hundred forty-two thousand, four hundred fifty-four".