1402945 has 4 divisors (see below), whose sum is σ = 1683540. Its totient is φ = 1122352.

The previous prime is 1402943. The next prime is 1402957. The reversal of 1402945 is 5492041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5492041 = 2011 ⋅2731.

It can be written as a sum of positive squares in 2 ways, for example, as 467856 + 935089 = 684^2 + 967^2 .

It is a cyclic number.

It is not a de Polignac number, because 1402945 - 2¹ = 1402943 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1402943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140290 + ... + 140299.

It is an arithmetic number, because the mean of its divisors is an integer number (420885).

2^1402945 is an apocalyptic number.

It is an amenable number.

1402945 is a deficient number, since it is larger than the sum of its proper divisors (280595).

1402945 is an equidigital number, since it uses as much as digits as its factorization.

1402945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280594.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 1402945 is about 1184.4597924793. The cubic root of 1402945 is about 111.9472806732.

Adding to 1402945 its reverse (5492041), we get a palindrome (6894986).

The spelling of 1402945 in words is "one million, four hundred two thousand, nine hundred forty-five".