1172240 has 20 divisors (see below), whose sum is σ = 2725644. Its totient is φ = 468864.

The previous prime is 1172233. The next prime is 1172257. The reversal of 1172240 is 422711.

It can be written as a sum of positive squares in 2 ways, for example, as 698896 + 473344 = 836^2 + 688^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7247 + ... + 7406.

2^1172240 is an apocalyptic number.

1172240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1172240 is an abundant number, since it is smaller than the sum of its proper divisors (1553404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1172240 is a wasteful number, since it uses less digits than its factorization.

1172240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14666 (or 14660 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 1172240 is about 1082.7003278839. The cubic root of 1172240 is about 105.4400279082.

Adding to 1172240 its reverse (422711), we get a palindrome (1594951).

The spelling of 1172240 in words is "one million, one hundred seventy-two thousand, two hundred forty".