1261402 has 4 divisors (see below), whose sum is σ = 1892106. Its totient is φ = 630700.

The previous prime is 1261387. The next prime is 1261411. The reversal of 1261402 is 2041621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2041621 = 367 ⋅5563.

It can be written as a sum of positive squares in only one way, i.e., 1256641 + 4761 = 1121^2 + 69^2 .

It is a super-2 number, since 2×1261402² = 3182270011208, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315349 + ... + 315352.

2^1261402 is an apocalyptic number.

1261402 is a deficient number, since it is larger than the sum of its proper divisors (630704).

1261402 is an equidigital number, since it uses as much as digits as its factorization.

1261402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630703.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1261402 is about 1123.1215428439. The cubic root of 1261402 is about 108.0482751717.

The spelling of 1261402 in words is "one million, two hundred sixty-one thousand, four hundred two".