402213243 has 8 divisors (see below), whose sum is σ = 536428368. Its totient is φ = 268070144.

The previous prime is 402213233. The next prime is 402213277. The reversal of 402213243 is 342312204.

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

It is a cyclic number.

It is not a de Polignac number, because 402213243 - 2⁵ = 402213211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (402213233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3246 + ... + 28547.

It is an arithmetic number, because the mean of its divisors is an integer number (67053546).

Almost surely, 2^402213243 is an apocalyptic number.

402213243 is a deficient number, since it is larger than the sum of its proper divisors (134215125).

402213243 is a wasteful number, since it uses less digits than its factorization.

402213243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36013.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 402213243 is about 20055.2547478211. The cubic root of 402213243 is about 738.1627438331.

Adding to 402213243 its reverse (342312204), we get a palindrome (744525447).

The spelling of 402213243 in words is "four hundred two million, two hundred thirteen thousand, two hundred forty-three".