42153242 has 8 divisors (see below), whose sum is σ = 65269632. Its totient is φ = 20396700.

The previous prime is 42153239. The next prime is 42153263. The reversal of 42153242 is 24235124.

It is a happy number.

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

It is a super-2 number, since 2×42153242² = 3553791622221128, which contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 339884 + ... + 340007.

It is an arithmetic number, because the mean of its divisors is an integer number (8158704).

Almost surely, 2^42153242 is an apocalyptic number.

42153242 is a deficient number, since it is larger than the sum of its proper divisors (23116390).

42153242 is a wasteful number, since it uses less digits than its factorization.

42153242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679924.

The product of its digits is 1920, while the sum is 23.

The square root of 42153242 is about 6492.5528107209. The cubic root of 42153242 is about 348.0249079367.

Adding to 42153242 its reverse (24235124), we get a palindrome (66388366).

The spelling of 42153242 in words is "forty-two million, one hundred fifty-three thousand, two hundred forty-two".