407542242 has 32 divisors (see below), whose sum is σ = 824774400. Its totient is φ = 134239248.

The previous prime is 407542237. The next prime is 407542243. The reversal of 407542242 is 242245704.

It is not an unprimeable number, because it can be changed into a prime (407542243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 474009 + ... + 474867.

It is an arithmetic number, because the mean of its divisors is an integer number (25774200).

Almost surely, 2^407542242 is an apocalyptic number.

407542242 is an abundant number, since it is smaller than the sum of its proper divisors (417232158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

407542242 is a wasteful number, since it uses less digits than its factorization.

407542242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1710.

The product of its (nonzero) digits is 17920, while the sum is 30.

The square root of 407542242 is about 20187.6754976892. The cubic root of 407542242 is about 741.4084704130.

Adding to 407542242 its reverse (242245704), we get a palindrome (649787946).

The spelling of 407542242 in words is "four hundred seven million, five hundred forty-two thousand, two hundred forty-two".