402134650 has 12 divisors (see below), whose sum is σ = 747970542. Its totient is φ = 160853840.

The previous prime is 402134641. The next prime is 402134653. The reversal of 402134650 is 56431204.

It can be written as a sum of positive squares in 3 ways, for example, as 267551449 + 134583201 = 16357^2 + 11601^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (402134653) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 4021297 + ... + 4021396.

Almost surely, 2^402134650 is an apocalyptic number.

402134650 is a deficient number, since it is larger than the sum of its proper divisors (345835892).

402134650 is a wasteful number, since it uses less digits than its factorization.

402134650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8042705 (or 8042700 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 402134650 is about 20053.2952404337. The cubic root of 402134650 is about 738.1146613755.

Adding to 402134650 its reverse (56431204), we get a palindrome (458565854).

The spelling of 402134650 in words is "four hundred two million, one hundred thirty-four thousand, six hundred fifty".