10420542 has 64 divisors (see below), whose sum is σ = 25816320. Its totient is φ = 3088800.

The previous prime is 10420537. The next prime is 10420547. The reversal of 10420542 is 24502401.

10420542 is a `hidden beast` number, since 104 + 20 + 542 = 666.

10420542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (10420537) and next prime (10420547).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10420547) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31317 + ... + 31647.

It is an arithmetic number, because the mean of its divisors is an integer number (403380).

Almost surely, 2^10420542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10420542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12908160).

10420542 is an abundant number, since it is smaller than the sum of its proper divisors (15395778).

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

10420542 is a wasteful number, since it uses less digits than its factorization.

10420542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406 (or 400 counting only the distinct ones).

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

The square root of 10420542 is about 3228.0864300697. The cubic root of 10420542 is about 218.4221961501.

Adding to 10420542 its reverse (24502401), we get a palindrome (34922943).

The spelling of 10420542 in words is "ten million, four hundred twenty thousand, five hundred forty-two".