542121445 has 8 divisors (see below), whose sum is σ = 656862336. Its totient is φ = 429486096.

The previous prime is 542121427. The next prime is 542121469. The reversal of 542121445 is 544121245.

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

It is a cyclic number.

It is not a de Polignac number, because 542121445 - 2⁷ = 542121317 is a prime.

It is a super-2 number, since 2×542121445² = 587791322257776050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 525817 + ... + 526846.

It is an arithmetic number, because the mean of its divisors is an integer number (82107792).

Almost surely, 2^542121445 is an apocalyptic number.

It is an amenable number.

542121445 is a deficient number, since it is larger than the sum of its proper divisors (114740891).

542121445 is a wasteful number, since it uses less digits than its factorization.

542121445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1052771.

The product of its digits is 6400, while the sum is 28.

The square root of 542121445 is about 23283.5015622651. The cubic root of 542121445 is about 815.3902781564.

The spelling of 542121445 in words is "five hundred forty-two million, one hundred twenty-one thousand, four hundred forty-five".