1321402041154 has 64 divisors (see below), whose sum is σ = 2240130816000. Its totient is φ = 580383740160.

The previous prime is 1321402041151. The next prime is 1321402041187. The reversal of 1321402041154 is 4511402041231.

It is a happy number.

It is a super-2 number, since 2×1321402041154² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1321402041151) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15655437 + ... + 15739615.

It is an arithmetic number, because the mean of its divisors is an integer number (35002044000).

Almost surely, 2^{1321402041154} is an apocalyptic number.

1321402041154 is a deficient number, since it is larger than the sum of its proper divisors (918728774846).

1321402041154 is a wasteful number, since it uses less digits than its factorization.

1321402041154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84523.

The product of its (nonzero) digits is 3840, while the sum is 28.

Adding to 1321402041154 its reverse (4511402041231), we get a palindrome (5832804082385).

The spelling of 1321402041154 in words is "one trillion, three hundred twenty-one billion, four hundred two million, forty-one thousand, one hundred fifty-four".