42403402 has 8 divisors (see below), whose sum is σ = 66952800. Its totient is φ = 20085804.

The previous prime is 42403399. The next prime is 42403409. The reversal of 42403402 is 20430424.

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

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 42403402.

It is not an unprimeable number, because it can be changed into a prime (42403409) 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, 557902 + ... + 557977.

It is an arithmetic number, because the mean of its divisors is an integer number (8369100).

Almost surely, 2^42403402 is an apocalyptic number.

42403402 is a deficient number, since it is larger than the sum of its proper divisors (24549398).

42403402 is a wasteful number, since it uses less digits than its factorization.

42403402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1115900.

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 42403402 is about 6511.7894621985. The cubic root of 42403402 is about 348.7120061555.

Adding to 42403402 its reverse (20430424), we get a palindrome (62833826).

The spelling of 42403402 in words is "forty-two million, four hundred three thousand, four hundred two".