1247961 has 16 divisors (see below), whose sum is σ = 1955520. Its totient is φ = 697920.

The previous prime is 1247959. The next prime is 1247969. The reversal of 1247961 is 1697421.

1247961 = T₅₄ + T₅₅ + ... + T₁₉₆.

It is a happy number.

It is not a de Polignac number, because 1247961 - 2¹ = 1247959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1247969) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1026 + ... + 1883.

It is an arithmetic number, because the mean of its divisors is an integer number (122220).

2^1247961 is an apocalyptic number.

1247961 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1247961 is a deficient number, since it is larger than the sum of its proper divisors (707559).

1247961 is a wasteful number, since it uses less digits than its factorization.

1247961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2936.

The product of its digits is 3024, while the sum is 30.

The square root of 1247961 is about 1117.1217480651. The cubic root of 1247961 is about 107.6631307274.

The spelling of 1247961 in words is "one million, two hundred forty-seven thousand, nine hundred sixty-one".