1242470 has 8 divisors (see below), whose sum is σ = 2236464. Its totient is φ = 496984.

The previous prime is 1242457. The next prime is 1242487. The reversal of 1242470 is 742421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62114 + ... + 62133.

It is an arithmetic number, because the mean of its divisors is an integer number (279558).

2^1242470 is an apocalyptic number.

1242470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1242470 is a deficient number, since it is larger than the sum of its proper divisors (993994).

1242470 is a wasteful number, since it uses less digits than its factorization.

1242470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124254.

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 1242470 is about 1114.6613835600. The cubic root of 1242470 is about 107.5049934583.

Adding to 1242470 its reverse (742421), we get a palindrome (1984891).

It can be divided in two parts, 1242 and 470, that multiplied together give a triangular number (583740 = T₁₀₈₀).

The spelling of 1242470 in words is "one million, two hundred forty-two thousand, four hundred seventy".