1421698356 has 144 divisors (see below), whose sum is σ = 4061715840. Its totient is φ = 416021760.

The previous prime is 1421698339. The next prime is 1421698363. The reversal of 1421698356 is 6538961241.

It is a super-3 number, since 3×1421698356³ (a number of 28 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2895271 + ... + 2895761.

It is an arithmetic number, because the mean of its divisors is an integer number (28206360).

Almost surely, 2^1421698356 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1421698356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2030857920).

1421698356 is an abundant number, since it is smaller than the sum of its proper divisors (2640017484).

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

1421698356 is a wasteful number, since it uses less digits than its factorization.

1421698356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806 (or 801 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 1421698356 is about 37705.4154731121. The cubic root of 1421698356 is about 1124.4387932735.

The spelling of 1421698356 in words is "one billion, four hundred twenty-one million, six hundred ninety-eight thousand, three hundred fifty-six".