1249762142 has 4 divisors (see below), whose sum is σ = 1874643216. Its totient is φ = 624881070.

The previous prime is 1249762127. The next prime is 1249762177. The reversal of 1249762142 is 2412679421.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 1249762096 and 1249762105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312440534 + ... + 312440537.

It is an arithmetic number, because the mean of its divisors is an integer number (468660804).

Almost surely, 2^1249762142 is an apocalyptic number.

1249762142 is a deficient number, since it is larger than the sum of its proper divisors (624881074).

1249762142 is an equidigital number, since it uses as much as digits as its factorization.

1249762142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624881073.

The product of its digits is 48384, while the sum is 38.

The square root of 1249762142 is about 35351.9750791947. The cubic root of 1249762142 is about 1077.1490140781.

The spelling of 1249762142 in words is "one billion, two hundred forty-nine million, seven hundred sixty-two thousand, one hundred forty-two".