1217406342 has 32 divisors (see below), whose sum is σ = 2566368000. Its totient is φ = 383933088.

The previous prime is 1217406319. The next prime is 1217406389. The reversal of 1217406342 is 2436047121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84159 + ... + 97557.

It is an arithmetic number, because the mean of its divisors is an integer number (80199000).

Almost surely, 2^1217406342 is an apocalyptic number.

1217406342 is an abundant number, since it is smaller than the sum of its proper divisors (1348961658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1217406342 is a wasteful number, since it uses less digits than its factorization.

1217406342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14220.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 1217406342 is about 34891.3505327610. The cubic root of 1217406342 is about 1067.7719796139.

The spelling of 1217406342 in words is "one billion, two hundred seventeen million, four hundred six thousand, three hundred forty-two".