1387402 has 4 divisors (see below), whose sum is σ = 2081106. Its totient is φ = 693700.

The previous prime is 1387367. The next prime is 1387403. The reversal of 1387402 is 2047831.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1279161 + 108241 = 1131^2 + 329^2 .

It is not an unprimeable number, because it can be changed into a prime (1387403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 346849 + ... + 346852.

2^1387402 is an apocalyptic number.

1387402 is a deficient number, since it is larger than the sum of its proper divisors (693704).

1387402 is an equidigital number, since it uses as much as digits as its factorization.

1387402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693703.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 1387402 is about 1177.8802995211. The cubic root of 1387402 is about 111.5323292339.

The spelling of 1387402 in words is "one million, three hundred eighty-seven thousand, four hundred two".