1375442 has 4 divisors (see below), whose sum is σ = 2063166. Its totient is φ = 687720.

The previous prime is 1375433. The next prime is 1375457. The reversal of 1375442 is 2445731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2445731 = 1303 ⋅1877.

It can be written as a sum of positive squares in only one way, i.e., 1062961 + 312481 = 1031^2 + 559^2 .

It is an Ulam number.

It is a d-powerful number, because it can be written as 1 + 3 + 7⁶ + 5⁷ + 4² + 4¹⁰ + 2¹⁷ .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343859 + ... + 343862.

2^1375442 is an apocalyptic number.

1375442 is a deficient number, since it is larger than the sum of its proper divisors (687724).

1375442 is an equidigital number, since it uses as much as digits as its factorization.

1375442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687723.

The product of its digits is 3360, while the sum is 26.

The square root of 1375442 is about 1172.7923942455. The cubic root of 1375442 is about 111.2109183938.

The spelling of 1375442 in words is "one million, three hundred seventy-five thousand, four hundred forty-two".