402540354 has 40 divisors (see below), whose sum is σ = 904834128. Its totient is φ = 133756920.

The previous prime is 402540317. The next prime is 402540431. The reversal of 402540354 is 453045204.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 49869 + ... + 57375.

Almost surely, 2^402540354 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402540354, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (452417064).

402540354 is an abundant number, since it is smaller than the sum of its proper divisors (502293774).

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

402540354 is a wasteful number, since it uses less digits than its factorization.

402540354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7852 (or 7843 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 402540354 is about 20063.4083345777. The cubic root of 402540354 is about 738.3628000046.

Adding to 402540354 its reverse (453045204), we get a palindrome (855585558).

The spelling of 402540354 in words is "four hundred two million, five hundred forty thousand, three hundred fifty-four".