2142542 has 16 divisors (see below), whose sum is σ = 3428352. Its totient is φ = 1001880.

The previous prime is 2142541. The next prime is 2142551. The reversal of 2142542 is 2452412.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2142541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1667 + ... + 2657.

It is an arithmetic number, because the mean of its divisors is an integer number (214272).

2^2142542 is an apocalyptic number.

2142542 is a deficient number, since it is larger than the sum of its proper divisors (1285810).

2142542 is a wasteful number, since it uses less digits than its factorization.

2142542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1063.

The product of its digits is 640, while the sum is 20.

The square root of 2142542 is about 1463.7424636868. The cubic root of 2142542 is about 128.9168785274.

Adding to 2142542 its reverse (2452412), we get a palindrome (4594954).

The spelling of 2142542 in words is "two million, one hundred forty-two thousand, five hundred forty-two".