1421386512 has 320 divisors, whose sum is σ = 4791360000. Its totient is φ = 360364032.

The previous prime is 1421386501. The next prime is 1421386517. The reversal of 1421386512 is 2156831241.

It is a super-2 number, since 2×1421386512² = 4040679232991052288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421386517) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6206814 + ... + 6207042.

It is an arithmetic number, because the mean of its divisors is an integer number (14973000).

Almost surely, 2^1421386512 is an apocalyptic number.

1421386512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1421386512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2395680000).

1421386512 is an abundant number, since it is smaller than the sum of its proper divisors (3369973488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1421386512 is a wasteful number, since it uses less digits than its factorization.

1421386512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303 (or 283 counting only the distinct ones).

The product of its digits is 11520, while the sum is 33.

The square root of 1421386512 is about 37701.2799782713. The cubic root of 1421386512 is about 1124.3565735043.

The spelling of 1421386512 in words is "one billion, four hundred twenty-one million, three hundred eighty-six thousand, five hundred twelve".