402140215 has 8 divisors (see below), whose sum is σ = 498135168. Its totient is φ = 311334240.

The previous prime is 402140213. The next prime is 402140227. The reversal of 402140215 is 512041204.

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

It is not a de Polignac number, because 402140215 - 2¹ = 402140213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 402140192 and 402140201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402140213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1297072 + ... + 1297381.

It is an arithmetic number, because the mean of its divisors is an integer number (62266896).

Almost surely, 2^402140215 is an apocalyptic number.

402140215 is a deficient number, since it is larger than the sum of its proper divisors (95994953).

402140215 is a wasteful number, since it uses less digits than its factorization.

402140215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2594489.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 402140215 is about 20053.4339952039. The cubic root of 402140215 is about 738.1180661962.

Adding to 402140215 its reverse (512041204), we get a palindrome (914181419).

The spelling of 402140215 in words is "four hundred two million, one hundred forty thousand, two hundred fifteen".