1381402 has 8 divisors (see below), whose sum is σ = 2260512. Its totient is φ = 627900.

The previous prime is 1381397. The next prime is 1381409. The reversal of 1381402 is 2041831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1381402.

It is not an unprimeable number, because it can be changed into a prime (1381409) 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, 31374 + ... + 31417.

It is an arithmetic number, because the mean of its divisors is an integer number (282564).

2^1381402 is an apocalyptic number.

1381402 is a deficient number, since it is larger than the sum of its proper divisors (879110).

1381402 is a wasteful number, since it uses less digits than its factorization.

1381402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62804.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1381402 is about 1175.3305917911. The cubic root of 1381402 is about 111.3713182287.

It can be divided in two parts, 138 and 1402, that added together give a triangular number (1540 = T₅₅).

The spelling of 1381402 in words is "one million, three hundred eighty-one thousand, four hundred two".