42021154103554 has 8 divisors (see below), whose sum is σ = 64221009101820. Its totient is φ = 20614151069616.

The previous prime is 42021154103333. The next prime is 42021154103587. The reversal of 42021154103554 is 45530145112024.

It can be written as a sum of positive squares in 2 ways, for example, as 40341996856225 + 1679157247329 = 6351535^2 + 1295823^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198212990949 + ... + 198212991160.

Almost surely, 2^{42021154103554} is an apocalyptic number.

42021154103554 is a deficient number, since it is larger than the sum of its proper divisors (22199854998266).

42021154103554 is a wasteful number, since it uses less digits than its factorization.

42021154103554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396425982164.

The product of its (nonzero) digits is 96000, while the sum is 37.

Adding to 42021154103554 its reverse (45530145112024), we get a palindrome (87551299215578).

The spelling of 42021154103554 in words is "forty-two trillion, twenty-one billion, one hundred fifty-four million, one hundred three thousand, five hundred fifty-four".