2147420237 has 4 divisors (see below), whose sum is σ = 2147541216. Its totient is φ = 2147299260.

The previous prime is 2147420183. The next prime is 2147420269. The reversal of 2147420237 is 7320247412.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2147420237 - 2²² = 2143225933 is a prime.

It is a super-2 number, since 2×2147420237² = 9222827348554272338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2147425237) 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, 28073 + ... + 71294.

It is an arithmetic number, because the mean of its divisors is an integer number (536885304).

Almost surely, 2^2147420237 is an apocalyptic number.

It is an amenable number.

2147420237 is a deficient number, since it is larger than the sum of its proper divisors (120979).

2147420237 is an equidigital number, since it uses as much as digits as its factorization.

2147420237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120978.

The product of its (nonzero) digits is 18816, while the sum is 32.

The square root of 2147420237 is about 46340.2658278953. The cubic root of 2147420237 is about 1290.1464563403.

Adding to 2147420237 its reverse (7320247412), we get a palindrome (9467667649).

The spelling of 2147420237 in words is "two billion, one hundred forty-seven million, four hundred twenty thousand, two hundred thirty-seven".