1421503481 has 8 divisors (see below), whose sum is σ = 1507017984. Its totient is φ = 1338467760.

The previous prime is 1421503441. The next prime is 1421503519. The reversal of 1421503481 is 1843051241.

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 1421503481 - 2¹⁰ = 1421502457 is a prime.

It is a super-2 number, since 2×1421503481² = 4041344292990234722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1421503441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 618515 + ... + 620808.

It is an arithmetic number, because the mean of its divisors is an integer number (188377248).

Almost surely, 2^1421503481 is an apocalyptic number.

It is an amenable number.

1421503481 is a deficient number, since it is larger than the sum of its proper divisors (85514503).

1421503481 is a wasteful number, since it uses less digits than its factorization.

1421503481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1239391.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 1421503481 is about 37702.8312066879. The cubic root of 1421503481 is about 1124.3874145776.

The spelling of 1421503481 in words is "one billion, four hundred twenty-one million, five hundred three thousand, four hundred eighty-one".