42303402 has 24 divisors (see below), whose sum is σ = 94819140. Its totient is φ = 13614720.

The previous prime is 42303389. The next prime is 42303407. The reversal of 42303402 is 20430324.

It can be written as a sum of positive squares in 2 ways, for example, as 42263001 + 40401 = 6501^2 + 201^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (42303407) 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, 39999 + ... + 41042.

Almost surely, 2^42303402 is an apocalyptic number.

42303402 is an abundant number, since it is smaller than the sum of its proper divisors (52515738).

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

42303402 is a wasteful number, since it uses less digits than its factorization.

42303402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81078 (or 81075 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 42303402 is about 6504.1065489428. The cubic root of 42303402 is about 348.4376677203.

Adding to 42303402 its reverse (20430324), we get a palindrome (62733726).

The spelling of 42303402 in words is "forty-two million, three hundred three thousand, four hundred two".