1421641782 has 24 divisors (see below), whose sum is σ = 3360244680. Its totient is φ = 430800480.

The previous prime is 1421641763. The next prime is 1421641789. The reversal of 1421641782 is 2871461241.

It is a happy number.

1421641782 is a `hidden beast` number, since 1 + 4 + 2 + 1 + 641 + 7 + 8 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421641789) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3589807 + ... + 3590202.

It is an arithmetic number, because the mean of its divisors is an integer number (140010195).

Almost surely, 2^1421641782 is an apocalyptic number.

1421641782 is an abundant number, since it is smaller than the sum of its proper divisors (1938602898).

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

1421641782 is a wasteful number, since it uses less digits than its factorization.

1421641782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7180028 (or 7180025 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 1421641782 is about 37704.6652551113. The cubic root of 1421641782 is about 1124.4238780505.

The spelling of 1421641782 in words is "one billion, four hundred twenty-one million, six hundred forty-one thousand, seven hundred eighty-two".