1214157207 has 4 divisors (see below), whose sum is σ = 1618876280. Its totient is φ = 809438136.

The previous prime is 1214157151. The next prime is 1214157229. The reversal of 1214157207 is 7027514121.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1214157207 - 2⁷ = 1214157079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1214157907) 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, 202359532 + ... + 202359537.

It is an arithmetic number, because the mean of its divisors is an integer number (404719070).

Almost surely, 2^1214157207 is an apocalyptic number.

1214157207 is a deficient number, since it is larger than the sum of its proper divisors (404719073).

1214157207 is an equidigital number, since it uses as much as digits as its factorization.

1214157207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404719072.

The product of its (nonzero) digits is 3920, while the sum is 30.

The square root of 1214157207 is about 34844.7586732926. The cubic root of 1214157207 is about 1066.8212079580.

The spelling of 1214157207 in words is "one billion, two hundred fourteen million, one hundred fifty-seven thousand, two hundred seven".