1261016 has 8 divisors (see below), whose sum is σ = 2364420. Its totient is φ = 630504.

The previous prime is 1260991. The next prime is 1261033. The reversal of 1261016 is 6101621.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1261016² = 3180322704512, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1260985 and 1261003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78806 + ... + 78821.

2^1261016 is an apocalyptic number.

It is an amenable number.

1261016 is a deficient number, since it is larger than the sum of its proper divisors (1103404).

1261016 is a wasteful number, since it uses less digits than its factorization.

1261016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157633 (or 157629 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1261016 is about 1122.9496872078. The cubic root of 1261016 is about 108.0372528095.

Adding to 1261016 its reverse (6101621), we get a palindrome (7362637).

The spelling of 1261016 in words is "one million, two hundred sixty-one thousand, sixteen".