10402542 has 12 divisors (see below), whose sum is σ = 22538880. Its totient is φ = 3467508.

The previous prime is 10402529. The next prime is 10402549. The reversal of 10402542 is 24520401.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 577919 = 10402542 / (1 + 0 + 4 + 0 + 2 + 5 + 4 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10402549) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 288942 + ... + 288977.

It is an arithmetic number, because the mean of its divisors is an integer number (1878240).

Almost surely, 2^10402542 is an apocalyptic number.

10402542 is an abundant number, since it is smaller than the sum of its proper divisors (12136338).

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

10402542 is a wasteful number, since it uses less digits than its factorization.

10402542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577927 (or 577924 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 10402542 is about 3225.2971956085. The cubic root of 10402542 is about 218.2963592706.

Adding to 10402542 its reverse (24520401), we get a palindrome (34922943).

The spelling of 10402542 in words is "ten million, four hundred two thousand, five hundred forty-two".