1242435434 has 16 divisors (see below), whose sum is σ = 1929954600. Its totient is φ = 599501760.

The previous prime is 1242435431. The next prime is 1242435437. The reversal of 1242435434 is 4345342421.

It is an interprime number because it is at equal distance from previous prime (1242435431) and next prime (1242435437).

It can be written as a sum of positive squares in 4 ways, for example, as 726464209 + 515971225 = 26953^2 + 22715^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1242435434.

It is not an unprimeable number, because it can be changed into a prime (1242435431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89609 + ... + 102540.

Almost surely, 2^1242435434 is an apocalyptic number.

1242435434 is a deficient number, since it is larger than the sum of its proper divisors (687519166).

1242435434 is a wasteful number, since it uses less digits than its factorization.

1242435434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192265.

The product of its digits is 46080, while the sum is 32.

The square root of 1242435434 is about 35248.1975993100. The cubic root of 1242435434 is about 1075.0399650547.

Adding to 1242435434 its reverse (4345342421), we get a palindrome (5587777855).

The spelling of 1242435434 in words is "one billion, two hundred forty-two million, four hundred thirty-five thousand, four hundred thirty-four".