1421242165 has 32 divisors (see below), whose sum is σ = 1995531264. Its totient is φ = 951471360.

The previous prime is 1421242103. The next prime is 1421242189. The reversal of 1421242165 is 5612421241.

It is not a de Polignac number, because 1421242165 - 2²³ = 1412853557 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 889147 + ... + 890743.

It is an arithmetic number, because the mean of its divisors is an integer number (62360352).

Almost surely, 2^1421242165 is an apocalyptic number.

It is an amenable number.

1421242165 is a deficient number, since it is larger than the sum of its proper divisors (574289099).

1421242165 is a wasteful number, since it uses less digits than its factorization.

1421242165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2197.

The product of its digits is 3840, while the sum is 28.

The square root of 1421242165 is about 37699.3655782163. The cubic root of 1421242165 is about 1124.3185113748.

The spelling of 1421242165 in words is "one billion, four hundred twenty-one million, two hundred forty-two thousand, one hundred sixty-five".