42243403402 has 8 divisors (see below), whose sum is σ = 63439045956. Its totient is φ = 21097054752.

The previous prime is 42243403373. The next prime is 42243403409. The reversal of 42243403402 is 20430434224.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 28113564241 + 14129839161 = 167671^2 + 118869^2 .

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

It is not an unprimeable number, because it can be changed into a prime (42243403409) 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, 12321333 + ... + 12324760.

Almost surely, 2^42243403402 is an apocalyptic number.

42243403402 is a deficient number, since it is larger than the sum of its proper divisors (21195642554).

42243403402 is a wasteful number, since it uses less digits than its factorization.

42243403402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24646952.

The product of its (nonzero) digits is 18432, while the sum is 28.

Adding to 42243403402 its reverse (20430434224), we get a palindrome (62673837626).

The spelling of 42243403402 in words is "forty-two billion, two hundred forty-three million, four hundred three thousand, four hundred two".