1242467101 has 4 divisors (see below), whose sum is σ = 1242956704. Its totient is φ = 1241977500.

The previous prime is 1242467099. The next prime is 1242467113. The reversal of 1242467101 is 1017642421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1017642421 = 109 ⋅9336169.

It is a cyclic number.

It is not a de Polignac number, because 1242467101 - 2¹ = 1242467099 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1242467101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242467131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 240975 + ... + 246076.

It is an arithmetic number, because the mean of its divisors is an integer number (310739176).

Almost surely, 2^1242467101 is an apocalyptic number.

It is an amenable number.

1242467101 is a deficient number, since it is larger than the sum of its proper divisors (489603).

1242467101 is an equidigital number, since it uses as much as digits as its factorization.

1242467101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489602.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 1242467101 is about 35248.6467967211. The cubic root of 1242467101 is about 1075.0490984606.

The spelling of 1242467101 in words is "one billion, two hundred forty-two million, four hundred sixty-seven thousand, one hundred one".