42474555 has 24 divisors (see below), whose sum is σ = 73906560. Its totient is φ = 22565760.

The previous prime is 42474541. The next prime is 42474559. The reversal of 42474555 is 55547424.

It is a happy number.

It is not a de Polignac number, because 42474555 - 2⁷ = 42474427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42474559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10966 + ... + 14324.

It is an arithmetic number, because the mean of its divisors is an integer number (3079440).

Almost surely, 2^42474555 is an apocalyptic number.

42474555 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

42474555 is a deficient number, since it is larger than the sum of its proper divisors (31432005).

42474555 is a wasteful number, since it uses less digits than its factorization.

42474555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3651 (or 3648 counting only the distinct ones).

The product of its digits is 112000, while the sum is 36.

The square root of 42474555 is about 6517.2505706011. The cubic root of 42474555 is about 348.9069436604.

The spelling of 42474555 in words is "forty-two million, four hundred seventy-four thousand, five hundred fifty-five".