401215502 has 8 divisors (see below), whose sum is σ = 603759312. Its totient is φ = 199962400.

The previous prime is 401215481. The next prime is 401215511. The reversal of 401215502 is 205512104.

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

It is a super-2 number, since 2×401215502² = 321947758090224008, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321899 + ... + 323142.

It is an arithmetic number, because the mean of its divisors is an integer number (75469914).

Almost surely, 2^401215502 is an apocalyptic number.

401215502 is a deficient number, since it is larger than the sum of its proper divisors (202543810).

401215502 is a wasteful number, since it uses less digits than its factorization.

401215502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645354.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 401215502 is about 20030.3644999286. The cubic root of 401215502 is about 737.5518696449.

Adding to 401215502 its reverse (205512104), we get a palindrome (606727606).

The spelling of 401215502 in words is "four hundred one million, two hundred fifteen thousand, five hundred two".