402422024 has 8 divisors (see below), whose sum is σ = 754541310. Its totient is φ = 201211008.

The previous prime is 402422023. The next prime is 402422029. The reversal of 402422024 is 420224204.

It can be written as a sum of positive squares in only one way, i.e., 384865924 + 17556100 = 19618^2 + 4190^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 402421987 and 402422005.

It is not an unprimeable number, because it can be changed into a prime (402422023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25151369 + ... + 25151384.

Almost surely, 2^402422024 is an apocalyptic number.

It is an amenable number.

402422024 is a deficient number, since it is larger than the sum of its proper divisors (352119286).

402422024 is a wasteful number, since it uses less digits than its factorization.

402422024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50302759 (or 50302755 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 402422024 is about 20060.4592170768. The cubic root of 402422024 is about 738.2904436708.

Adding to 402422024 its reverse (420224204), we get a palindrome (822646228).

The spelling of 402422024 in words is "four hundred two million, four hundred twenty-two thousand, twenty-four".