1421531235 has 16 divisors (see below), whose sum is σ = 2527166880. Its totient is φ = 758149920.

The previous prime is 1421531219. The next prime is 1421531249. The reversal of 1421531235 is 5321351241.

1421531235 is a `hidden beast` number, since 1 + 421 + 5 + 3 + 1 + 235 = 666.

It is not a de Polignac number, because 1421531235 - 2⁴ = 1421531219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 1421531199 and 1421531208.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5264796 + ... + 5265065.

It is an arithmetic number, because the mean of its divisors is an integer number (157947930).

Almost surely, 2^1421531235 is an apocalyptic number.

1421531235 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1421531235 is a deficient number, since it is larger than the sum of its proper divisors (1105635645).

1421531235 is a wasteful number, since it uses less digits than its factorization.

1421531235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10529875 (or 10529869 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 1421531235 is about 37703.1992674362. The cubic root of 1421531235 is about 1124.3947321925.

Adding to 1421531235 its reverse (5321351241), we get a palindrome (6742882476).

The spelling of 1421531235 in words is "one billion, four hundred twenty-one million, five hundred thirty-one thousand, two hundred thirty-five".