1421165254 has 4 divisors (see below), whose sum is σ = 2131747884. Its totient is φ = 710582626.

The previous prime is 1421165233. The next prime is 1421165293. The reversal of 1421165254 is 4525611241.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4525611241 = 113 ⋅40049657.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 355291312 + ... + 355291315.

It is an arithmetic number, because the mean of its divisors is an integer number (532936971).

Almost surely, 2^1421165254 is an apocalyptic number.

1421165254 is a deficient number, since it is larger than the sum of its proper divisors (710582630).

1421165254 is an equidigital number, since it uses as much as digits as its factorization.

1421165254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710582629.

The product of its digits is 9600, while the sum is 31.

The square root of 1421165254 is about 37698.3455074623. The cubic root of 1421165254 is about 1124.2982300502.

Adding to 1421165254 its reverse (4525611241), we get a palindrome (5946776495).

The spelling of 1421165254 in words is "one billion, four hundred twenty-one million, one hundred sixty-five thousand, two hundred fifty-four".