1421202261 has 32 divisors (see below), whose sum is σ = 2151930240. Its totient is φ = 828831744.

The previous prime is 1421202259. The next prime is 1421202271. The reversal of 1421202261 is 1622021241.

It is not a de Polignac number, because 1421202261 - 2¹ = 1421202259 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421202241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37521 + ... + 65193.

It is an arithmetic number, because the mean of its divisors is an integer number (67247820).

Almost surely, 2^1421202261 is an apocalyptic number.

It is an amenable number.

1421202261 is a deficient number, since it is larger than the sum of its proper divisors (730727979).

1421202261 is a wasteful number, since it uses less digits than its factorization.

1421202261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27765.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 1421202261 is about 37698.8363348260. The cubic root of 1421202261 is about 1124.3079888364.

The spelling of 1421202261 in words is "one billion, four hundred twenty-one million, two hundred two thousand, two hundred sixty-one".