1421531355 has 8 divisors (see below), whose sum is σ = 2274450192. Its totient is φ = 758150048.

The previous prime is 1421531333. The next prime is 1421531359. The reversal of 1421531355 is 5531351241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1421531355 - 2⁵ = 1421531323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1421531359) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47384364 + ... + 47384393.

It is an arithmetic number, because the mean of its divisors is an integer number (284306274).

Almost surely, 2^1421531355 is an apocalyptic number.

1421531355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1421531355 is a deficient number, since it is larger than the sum of its proper divisors (852918837).

1421531355 is an equidigital number, since it uses as much as digits as its factorization.

1421531355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94768765.

The product of its digits is 9000, while the sum is 30.

The square root of 1421531355 is about 37703.2008588130. The cubic root of 1421531355 is about 1124.3947638315.

Adding to 1421531355 its reverse (5531351241), we get a palindrome (6952882596).

The spelling of 1421531355 in words is "one billion, four hundred twenty-one million, five hundred thirty-one thousand, three hundred fifty-five".