1421404633128 has 32 divisors (see below), whose sum is σ = 3553554045600. Its totient is φ = 473795882688.

The previous prime is 1421404633127. The next prime is 1421404633147. The reversal of 1421404633128 is 8213364041241.

It is a super-3 number, since 3×1421404633128³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (1421404633123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2021983 + ... + 2632721.

It is an arithmetic number, because the mean of its divisors is an integer number (111048563925).

Almost surely, 2^{1421404633128} is an apocalyptic number.

It is an amenable number.

1421404633128 is an abundant number, since it is smaller than the sum of its proper divisors (2132149412472).

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

1421404633128 is a wasteful number, since it uses less digits than its factorization.

1421404633128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707721 (or 707717 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 39.

Adding to 1421404633128 its reverse (8213364041241), we get a palindrome (9634768674369).

The spelling of 1421404633128 in words is "one trillion, four hundred twenty-one billion, four hundred four million, six hundred thirty-three thousand, one hundred twenty-eight".