402424743 has 16 divisors (see below), whose sum is σ = 616896000. Its totient is φ = 228578016.

The previous prime is 402424739. The next prime is 402424787. The reversal of 402424743 is 347424204.

It is a happy number.

It is not a de Polignac number, because 402424743 - 2² = 402424739 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 402424743.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402424643) 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, 53868 + ... + 60881.

It is an arithmetic number, because the mean of its divisors is an integer number (38556000).

Almost surely, 2^402424743 is an apocalyptic number.

402424743 is a deficient number, since it is larger than the sum of its proper divisors (214471257).

402424743 is a wasteful number, since it uses less digits than its factorization.

402424743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114926.

The product of its (nonzero) digits is 21504, while the sum is 30.

The square root of 402424743 is about 20060.5269870958. The cubic root of 402424743 is about 738.2921064420.

Adding to 402424743 its reverse (347424204), we get a palindrome (749848947).

The spelling of 402424743 in words is "four hundred two million, four hundred twenty-four thousand, seven hundred forty-three".