1242154524 has 48 divisors (see below), whose sum is σ = 3123564192. Its totient is φ = 381925632.

The previous prime is 1242154513. The next prime is 1242154591. The reversal of 1242154524 is 4254512421.

It is a super-2 number, since 2×1242154524² = 3085895722987333152, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1242154491 and 1242154500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 362242 + ... + 365654.

It is an arithmetic number, because the mean of its divisors is an integer number (65074254).

Almost surely, 2^1242154524 is an apocalyptic number.

It is an amenable number.

1242154524 is an abundant number, since it is smaller than the sum of its proper divisors (1881409668).

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

1242154524 is a wasteful number, since it uses less digits than its factorization.

1242154524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5766 (or 5764 counting only the distinct ones).

The product of its digits is 12800, while the sum is 30.

The square root of 1242154524 is about 35244.2126312959. The cubic root of 1242154524 is about 1074.9589381107.

Adding to 1242154524 its reverse (4254512421), we get a palindrome (5496666945).

The spelling of 1242154524 in words is "one billion, two hundred forty-two million, one hundred fifty-four thousand, five hundred twenty-four".