1282161420 has 192 divisors, whose sum is σ = 4446489600. Its totient is φ = 304819200.

The previous prime is 1282161409. The next prime is 1282161443. The reversal of 1282161420 is 241612821.

1282161420 is a `hidden beast` number, since 1 + 2 + 8 + 21 + 614 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 170745 + ... + 178095.

It is an arithmetic number, because the mean of its divisors is an integer number (23158800).

Almost surely, 2^1282161420 is an apocalyptic number.

1282161420 is a gapful number since it is divisible by the number (10) 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 1282161420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2223244800).

1282161420 is an abundant number, since it is smaller than the sum of its proper divisors (3164328180).

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

1282161420 is a wasteful number, since it uses less digits than its factorization.

1282161420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7405 (or 7397 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 1282161420 is about 35807.2816616956. The cubic root of 1282161420 is about 1086.3778484363.

The spelling of 1282161420 in words is "one billion, two hundred eighty-two million, one hundred sixty-one thousand, four hundred twenty".