2142477 has 16 divisors (see below), whose sum is σ = 3220480. Its totient is φ = 1407456.

The previous prime is 2142463. The next prime is 2142499. The reversal of 2142477 is 7742412.

It is a happy number.

It is not a de Polignac number, because 2142477 - 2¹⁹ = 1618189 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2142477.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2142457) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1428 + ... + 2514.

It is an arithmetic number, because the mean of its divisors is an integer number (201280).

2^2142477 is an apocalyptic number.

2142477 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

2142477 is a deficient number, since it is larger than the sum of its proper divisors (1078003).

2142477 is a wasteful number, since it uses less digits than its factorization.

2142477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1169 (or 1163 counting only the distinct ones).

The product of its digits is 3136, while the sum is 27.

The square root of 2142477 is about 1463.7202601590. The cubic root of 2142477 is about 128.9155748296.

Adding to 2142477 its reverse (7742412), we get a palindrome (9884889).

The spelling of 2142477 in words is "two million, one hundred forty-two thousand, four hundred seventy-seven".