1421523213 has 16 divisors (see below), whose sum is σ = 2068334400. Its totient is φ = 861252480.

The previous prime is 1421523179. The next prime is 1421523223. The reversal of 1421523213 is 3123251241.

It is not a de Polignac number, because 1421523213 - 2⁶ = 1421523149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421523223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 151503 + ... + 160611.

It is an arithmetic number, because the mean of its divisors is an integer number (129270900).

Almost surely, 2^1421523213 is an apocalyptic number.

It is an amenable number.

1421523213 is a deficient number, since it is larger than the sum of its proper divisors (646811187).

1421523213 is a wasteful number, since it uses less digits than its factorization.

1421523213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13852.

The product of its digits is 1440, while the sum is 24.

The square root of 1421523213 is about 37703.0928837410. The cubic root of 1421523213 is about 1124.3926171231.

Adding to 1421523213 its reverse (3123251241), we get a palindrome (4544774454).

The spelling of 1421523213 in words is "one billion, four hundred twenty-one million, five hundred twenty-three thousand, two hundred thirteen".