1421502397 has 12 divisors (see below), whose sum is σ = 1656016896. Its totient is φ = 1216638360.

The previous prime is 1421502389. The next prime is 1421502409. The reversal of 1421502397 is 7932051241.

It is a happy number.

It is not a de Polignac number, because 1421502397 - 2³ = 1421502389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421502307) 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 11 ways as a sum of consecutive naturals, for example, 12868 + ... + 54850.

It is an arithmetic number, because the mean of its divisors is an integer number (138001408).

Almost surely, 2^1421502397 is an apocalyptic number.

It is an amenable number.

1421502397 is a deficient number, since it is larger than the sum of its proper divisors (234514499).

1421502397 is an equidigital number, since it uses as much as digits as its factorization.

1421502397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42688 (or 42681 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 1421502397 is about 37702.8168311069. The cubic root of 1421502397 is about 1124.3871287684.

The spelling of 1421502397 in words is "one billion, four hundred twenty-one million, five hundred two thousand, three hundred ninety-seven".