1214401642 has 8 divisors (see below), whose sum is σ = 1870835076. Its totient is φ = 590789952.

The previous prime is 1214401637. The next prime is 1214401691. The reversal of 1214401642 is 2461044121.

It can be written as a sum of positive squares in 2 ways, for example, as 1182603321 + 31798321 = 34389^2 + 5639^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8205343 + ... + 8205490.

Almost surely, 2^1214401642 is an apocalyptic number.

1214401642 is a deficient number, since it is larger than the sum of its proper divisors (656433434).

1214401642 is a wasteful number, since it uses less digits than its factorization.

1214401642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16410872.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 1214401642 is about 34848.2659826856. The cubic root of 1214401642 is about 1066.8927942246.

Adding to 1214401642 its reverse (2461044121), we get a palindrome (3675445763).

The spelling of 1214401642 in words is "one billion, two hundred fourteen million, four hundred one thousand, six hundred forty-two".