402775254 has 120 divisors (see below), whose sum is σ = 1096579440. Its totient is φ = 108221184.

The previous prime is 402775223. The next prime is 402775291. The reversal of 402775254 is 452577204.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 327112 + ... + 328340.

It is an arithmetic number, because the mean of its divisors is an integer number (9138162).

Almost surely, 2^402775254 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402775254, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (548289720).

402775254 is an abundant number, since it is smaller than the sum of its proper divisors (693804186).

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

402775254 is a wasteful number, since it uses less digits than its factorization.

402775254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1284 (or 1258 counting only the distinct ones).

The product of its (nonzero) digits is 78400, while the sum is 36.

The square root of 402775254 is about 20069.2614213877. The cubic root of 402775254 is about 738.5063944658.

The spelling of 402775254 in words is "four hundred two million, seven hundred seventy-five thousand, two hundred fifty-four".