1242152 has 8 divisors (see below), whose sum is σ = 2329050. Its totient is φ = 621072.

The previous prime is 1242151. The next prime is 1242167. The reversal of 1242152 is 2512421.

It can be written as a sum of positive squares in only one way, i.e., 1240996 + 1156 = 1114^2 + 34^2 .

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

It is a super-2 number, since 2×1242152² = 3085883182208, which contains 22 as substring.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1242152.

It is not an unprimeable number, because it can be changed into a prime (1242151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77627 + ... + 77642.

2^1242152 is an apocalyptic number.

It is an amenable number.

1242152 is a deficient number, since it is larger than the sum of its proper divisors (1086898).

1242152 is a wasteful number, since it uses less digits than its factorization.

1242152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155275 (or 155271 counting only the distinct ones).

The product of its digits is 160, while the sum is 17.

The square root of 1242152 is about 1114.5187302150. The cubic root of 1242152 is about 107.4958210021.

Adding to 1242152 its reverse (2512421), we get a palindrome (3754573).

The spelling of 1242152 in words is "one million, two hundred forty-two thousand, one hundred fifty-two".