542479945 has 64 divisors (see below), whose sum is σ = 824256000. Its totient is φ = 334172160.

The previous prime is 542479939. The next prime is 542479957. The reversal of 542479945 is 549974245.

It is a happy number.

It is not a de Polignac number, because 542479945 - 2¹³ = 542471753 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2570890 + ... + 2571100.

It is an arithmetic number, because the mean of its divisors is an integer number (12879000).

Almost surely, 2^542479945 is an apocalyptic number.

It is an amenable number.

542479945 is a deficient number, since it is larger than the sum of its proper divisors (281776055).

542479945 is a wasteful number, since it uses less digits than its factorization.

542479945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418.

The product of its digits is 1814400, while the sum is 49.

The square root of 542479945 is about 23291.1988742529. The cubic root of 542479945 is about 815.5699752861.

The spelling of 542479945 in words is "five hundred forty-two million, four hundred seventy-nine thousand, nine hundred forty-five".