42402442 has 8 divisors (see below), whose sum is σ = 64646532. Its totient is φ = 20853600.

The previous prime is 42402431. The next prime is 42402457. The reversal of 42402442 is 24420424.

It can be written as a sum of positive squares in 2 ways, for example, as 42133081 + 269361 = 6491^2 + 519^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173659 + ... + 173902.

Almost surely, 2^42402442 is an apocalyptic number.

42402442 is a deficient number, since it is larger than the sum of its proper divisors (22244090).

42402442 is a wasteful number, since it uses less digits than its factorization.

42402442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347624.

The product of its (nonzero) digits is 2048, while the sum is 22.

The square root of 42402442 is about 6511.7157493244. The cubic root of 42402442 is about 348.7093745580.

Adding to 42402442 its reverse (24420424), we get a palindrome (66822866).

The spelling of 42402442 in words is "forty-two million, four hundred two thousand, four hundred forty-two".