1042011251 has 8 divisors (see below), whose sum is σ = 1095880704. Its totient is φ = 988855560.

The previous prime is 1042011239. The next prime is 1042011259. The reversal of 1042011251 is 1521102401.

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

It is a de Polignac number, because none of the positive numbers 2^k-1042011251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1042011259) 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, 175445 + ... + 181286.

It is an arithmetic number, because the mean of its divisors is an integer number (136985088).

Almost surely, 2^1042011251 is an apocalyptic number.

1042011251 is a deficient number, since it is larger than the sum of its proper divisors (53869453).

1042011251 is a wasteful number, since it uses less digits than its factorization.

1042011251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356881.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 1042011251 is about 32280.1990545288. The cubic root of 1042011251 is about 1013.8120979535.

Adding to 1042011251 its reverse (1521102401), we get a palindrome (2563113652).

The spelling of 1042011251 in words is "one billion, forty-two million, eleven thousand, two hundred fifty-one".