42245402 has 8 divisors (see below), whose sum is σ = 65553300. Its totient is φ = 20394304.

The previous prime is 42245383. The next prime is 42245447. The reversal of 42245402 is 20454224.

It can be written as a sum of positive squares in 2 ways, for example, as 40081561 + 2163841 = 6331^2 + 1471^2 .

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

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, 364127 + ... + 364242.

Almost surely, 2^42245402 is an apocalyptic number.

42245402 is a deficient number, since it is larger than the sum of its proper divisors (23307898).

42245402 is a wasteful number, since it uses less digits than its factorization.

42245402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728400.

The product of its (nonzero) digits is 2560, while the sum is 23.

The square root of 42245402 is about 6499.6462980688. The cubic root of 42245402 is about 348.2783532852.

Adding to 42245402 its reverse (20454224), we get a palindrome (62699626).

The spelling of 42245402 in words is "forty-two million, two hundred forty-five thousand, four hundred two".