1457312242 has 8 divisors (see below), whose sum is σ = 2186151516. Its totient is φ = 728595072.

The previous prime is 1457312239. The next prime is 1457312281. The reversal of 1457312242 is 2422137541.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 971506561 + 485805681 = 31169^2 + 22041^2 .

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

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, 10158 + ... + 54934.

Almost surely, 2^1457312242 is an apocalyptic number.

1457312242 is a deficient number, since it is larger than the sum of its proper divisors (728839274).

1457312242 is a wasteful number, since it uses less digits than its factorization.

1457312242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61052.

The product of its digits is 13440, while the sum is 31.

The square root of 1457312242 is about 38174.7592264837. The cubic root of 1457312242 is about 1133.7506204060.

Adding to 1457312242 its reverse (2422137541), we get a palindrome (3879449783).

The spelling of 1457312242 in words is "one billion, four hundred fifty-seven million, three hundred twelve thousand, two hundred forty-two".