2420156 has 6 divisors (see below), whose sum is σ = 4235280. Its totient is φ = 1210076.

The previous prime is 2420123. The next prime is 2420167. The reversal of 2420156 is 6510242.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302516 + ... + 302523.

It is an arithmetic number, because the mean of its divisors is an integer number (705880).

2^2420156 is an apocalyptic number.

It is an amenable number.

2420156 is a deficient number, since it is larger than the sum of its proper divisors (1815124).

2420156 is a wasteful number, since it uses less digits than its factorization.

2420156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605043 (or 605041 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 2420156 is about 1555.6850581014. The cubic root of 2420156 is about 134.2603537010.

Adding to 2420156 its reverse (6510242), we get a palindrome (8930398).

The spelling of 2420156 in words is "two million, four hundred twenty thousand, one hundred fifty-six".