1242735 has 16 divisors (see below), whose sum is σ = 2141664. Its totient is φ = 611712.

The previous prime is 1242643. The next prime is 1242739. The reversal of 1242735 is 5372421.

It is not a de Polignac number, because 1242735 - 2¹³ = 1234543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242739) 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, 2992 + ... + 3381.

It is an arithmetic number, because the mean of its divisors is an integer number (133854).

2^1242735 is an apocalyptic number.

1242735 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1242735 is a deficient number, since it is larger than the sum of its proper divisors (898929).

1242735 is a wasteful number, since it uses less digits than its factorization.

1242735 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6394.

The product of its digits is 1680, while the sum is 24.

The square root of 1242735 is about 1114.7802474030. The cubic root of 1242735 is about 107.5126359764.

The spelling of 1242735 in words is "one million, two hundred forty-two thousand, seven hundred thirty-five".