405225542 has 8 divisors (see below), whose sum is σ = 616399632. Its totient is φ = 199759000.

The previous prime is 405225539. The next prime is 405225547. The reversal of 405225542 is 245522504.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405225547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1426709 + ... + 1426992.

It is an arithmetic number, because the mean of its divisors is an integer number (77049954).

Almost surely, 2^405225542 is an apocalyptic number.

405225542 is a deficient number, since it is larger than the sum of its proper divisors (211174090).

405225542 is a wasteful number, since it uses less digits than its factorization.

405225542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2853774.

The product of its (nonzero) digits is 16000, while the sum is 29.

The square root of 405225542 is about 20130.2146535997. The cubic root of 405225542 is about 740.0009386402. Note that the first 3 decimals are identical.

It can be divided in two parts, 40522 and 5542, that added together give a palindrome (46064).

The spelling of 405225542 in words is "four hundred five million, two hundred twenty-five thousand, five hundred forty-two".