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3142474 = 21571237
BaseRepresentation
bin1011111111001101001010
312220122122221
423333031022
51301024344
6151204254
735465506
oct13771512
95818587
103142474
111856a95
12107668a
1386046a
145bb306
15421184
hex2ff34a

3142474 has 4 divisors (see below), whose sum is σ = 4713714. Its totient is φ = 1571236.

The previous prime is 3142459. The next prime is 3142481. The reversal of 3142474 is 4742413.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4742413 = 13364801.

It can be written as a sum of positive squares in only one way, i.e., 1836025 + 1306449 = 1355^2 + 1143^2 .

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 785617 + ... + 785620.

Almost surely, 23142474 is an apocalyptic number.

3142474 is a deficient number, since it is larger than the sum of its proper divisors (1571240).

3142474 is a wasteful number, since it uses less digits than its factorization.

3142474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1571239.

The product of its digits is 2688, while the sum is 25.

The square root of 3142474 is about 1772.7024567028. The cubic root of 3142474 is about 146.4728834248.

Adding to 3142474 its reverse (4742413), we get a palindrome (7884887).

The spelling of 3142474 in words is "three million, one hundred forty-two thousand, four hundred seventy-four".

Divisors: 1 2 1571237 3142474