7142864217 has 4 divisors (see below), whose sum is σ = 9523818960. Its totient is φ = 4761909476.

The previous prime is 7142864213. The next prime is 7142864231. The reversal of 7142864217 is 7124682417.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7124682417 = 3 ⋅2374894139.

It is a cyclic number.

It is not a de Polignac number, because 7142864217 - 2² = 7142864213 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7142864213) 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, 1190477367 + ... + 1190477372.

It is an arithmetic number, because the mean of its divisors is an integer number (2380954740).

Almost surely, 2^7142864217 is an apocalyptic number.

It is an amenable number.

7142864217 is a deficient number, since it is larger than the sum of its proper divisors (2380954743).

7142864217 is a wasteful number, since it uses less digits than its factorization.

7142864217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2380954742.

The product of its digits is 150528, while the sum is 42.

The square root of 7142864217 is about 84515.4673240348. The cubic root of 7142864217 is about 1925.8574213307.

The spelling of 7142864217 in words is "seven billion, one hundred forty-two million, eight hundred sixty-four thousand, two hundred seventeen".