402213213242 has 24 divisors (see below), whose sum is σ = 629582229396. Its totient is φ = 192692280000.

The previous prime is 402213213239. The next prime is 402213213289. The reversal of 402213213242 is 242312312204.

It can be written as a sum of positive squares in 2 ways, for example, as 392864450521 + 9348762721 = 626789^2 + 96689^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 841859 + ... + 1230102.

Almost surely, 2^402213213242 is an apocalyptic number.

402213213242 is a deficient number, since it is larger than the sum of its proper divisors (227369016154).

402213213242 is a wasteful number, since it uses less digits than its factorization.

402213213242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2072126 (or 2072095 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 402213213242 its reverse (242312312204), we get a palindrome (644525525446).

The spelling of 402213213242 in words is "four hundred two billion, two hundred thirteen million, two hundred thirteen thousand, two hundred forty-two".