402434501 has 12 divisors (see below), whose sum is σ = 469974348. Its totient is φ = 343590912.

The previous prime is 402434477. The next prime is 402434551. The reversal of 402434501 is 105434204.

It can be written as a sum of positive squares in 2 ways, for example, as 368678401 + 33756100 = 19201^2 + 5810^2 .

It is not a de Polignac number, because 402434501 - 2⁶ = 402434437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402434551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3386 + ... + 28571.

It is an arithmetic number, because the mean of its divisors is an integer number (39164529).

Almost surely, 2^402434501 is an apocalyptic number.

It is an amenable number.

402434501 is a deficient number, since it is larger than the sum of its proper divisors (67539847).

402434501 is a wasteful number, since it uses less digits than its factorization.

402434501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32228 (or 32221 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 402434501 is about 20060.7701995711. The cubic root of 402434501 is about 738.2980737657.

Adding to 402434501 its reverse (105434204), we get a palindrome (507868705).

It can be divided in two parts, 40243 and 4501, that added together give a palindrome (44744).

The spelling of 402434501 in words is "four hundred two million, four hundred thirty-four thousand, five hundred one".