1242546465 has 16 divisors (see below), whose sum is σ = 1991396736. Its totient is φ = 661584000.

The previous prime is 1242546449. The next prime is 1242546467. The reversal of 1242546465 is 5646452421.

It is not a de Polignac number, because 1242546465 - 2⁴ = 1242546449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1242546467) 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, 59901 + ... + 77930.

It is an arithmetic number, because the mean of its divisors is an integer number (124462296).

Almost surely, 2^1242546465 is an apocalyptic number.

1242546465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1242546465 is a deficient number, since it is larger than the sum of its proper divisors (748850271).

1242546465 is a wasteful number, since it uses less digits than its factorization.

1242546465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138440.

The product of its digits is 230400, while the sum is 39.

The square root of 1242546465 is about 35249.7725524577. The cubic root of 1242546465 is about 1075.0719879681.

Adding to 1242546465 its reverse (5646452421), we get a palindrome (6888998886).

The spelling of 1242546465 in words is "one billion, two hundred forty-two million, five hundred forty-six thousand, four hundred sixty-five".