402424061 has 16 divisors (see below), whose sum is σ = 444972528. Its totient is φ = 361574400.

The previous prime is 402424037. The next prime is 402424063. The reversal of 402424061 is 160424204.

It can be written as a sum of positive squares in 8 ways, for example, as 60543961 + 341880100 = 7781^2 + 18490^2 .

It is a cyclic number.

It is not a de Polignac number, because 402424061 - 2¹⁰ = 402423037 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402424063) 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, 456341 + ... + 457221.

It is an arithmetic number, because the mean of its divisors is an integer number (27810783).

Almost surely, 2^402424061 is an apocalyptic number.

402424061 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

402424061 is a deficient number, since it is larger than the sum of its proper divisors (42548467).

402424061 is a wasteful number, since it uses less digits than its factorization.

402424061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1792.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 402424061 is about 20060.5099885322. The cubic root of 402424061 is about 738.2916893739.

Adding to 402424061 its reverse (160424204), we get a palindrome (562848265).

The spelling of 402424061 in words is "four hundred two million, four hundred twenty-four thousand, sixty-one".