1214842388 has 12 divisors (see below), whose sum is σ = 2126260500. Its totient is φ = 607339392.

The previous prime is 1214842381. The next prime is 1214842397. The reversal of 1214842388 is 8832484121.

It can be written as a sum of positive squares in 2 ways, for example, as 237529744 + 977312644 = 15412^2 + 31262^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1214842381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23420 + ... + 54572.

It is an arithmetic number, because the mean of its divisors is an integer number (177188375).

Almost surely, 2^1214842388 is an apocalyptic number.

It is an amenable number.

1214842388 is a deficient number, since it is larger than the sum of its proper divisors (911418112).

1214842388 is a wasteful number, since it uses less digits than its factorization.

1214842388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40906 (or 40904 counting only the distinct ones).

The product of its digits is 98304, while the sum is 41.

The square root of 1214842388 is about 34854.5891956856. The cubic root of 1214842388 is about 1067.0218486877.

The spelling of 1214842388 in words is "one billion, two hundred fourteen million, eight hundred forty-two thousand, three hundred eighty-eight".