402154432140441 has 16 divisors (see below), whose sum is σ = 536535204891840. Its totient is φ = 267938314505280.

The previous prime is 402154432140371. The next prime is 402154432140469. The reversal of 402154432140441 is 144041234451204.

It is a de Polignac number, because none of the positive numbers 2^k-402154432140441 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 402154432140441.

It is not an unprimeable number, because it can be changed into a prime (402154432140481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 221000455 + ... + 222812723.

It is an arithmetic number, because the mean of its divisors is an integer number (33533450305740).

Almost surely, 2^{402154432140441} is an apocalyptic number.

It is an amenable number.

402154432140441 is a deficient number, since it is larger than the sum of its proper divisors (134380772751399).

402154432140441 is a wasteful number, since it uses less digits than its factorization.

402154432140441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1857656.

The product of its (nonzero) digits is 245760, while the sum is 39.

Adding to 402154432140441 its reverse (144041234451204), we get a palindrome (546195666591645).

The spelling of 402154432140441 in words is "four hundred two trillion, one hundred fifty-four billion, four hundred thirty-two million, one hundred forty thousand, four hundred forty-one".