402224020042 has 8 divisors (see below), whose sum is σ = 649746493956. Its totient is φ = 185641855392.

The previous prime is 402224020039. The next prime is 402224020049. The reversal of 402224020042 is 240020422204.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 402210908401 + 13111641 = 634201^2 + 3621^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 402224019995 and 402224020022.

It is not an unprimeable number, because it can be changed into a prime (402224020049) 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, 7735077283 + ... + 7735077334.

Almost surely, 2^402224020042 is an apocalyptic number.

402224020042 is a deficient number, since it is larger than the sum of its proper divisors (247522473914).

402224020042 is a wasteful number, since it uses less digits than its factorization.

402224020042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15470154632.

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

Adding to 402224020042 its reverse (240020422204), we get a palindrome (642244442246).

The spelling of 402224020042 in words is "four hundred two billion, two hundred twenty-four million, twenty thousand, forty-two".