13770842 has 16 divisors (see below), whose sum is σ = 21021000. Its totient is φ = 6765120.

The previous prime is 13770821. The next prime is 13770863. The reversal of 13770842 is 24807731.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13770821) and next prime (13770863).

It can be written as a sum of positive squares in 4 ways, for example, as 10491121 + 3279721 = 3239^2 + 1811^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13770799 and 13770808.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39284 + ... + 39632.

Almost surely, 2^13770842 is an apocalyptic number.

13770842 is a deficient number, since it is larger than the sum of its proper divisors (7250158).

13770842 is a wasteful number, since it uses less digits than its factorization.

13770842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 13770842 is about 3710.9085140973. The cubic root of 13770842 is about 239.6919775300.

The spelling of 13770842 in words is "thirteen million, seven hundred seventy thousand, eight hundred forty-two".