1142640451 has 2 divisors, whose sum is σ = 1142640452. Its totient is φ = 1142640450.

The previous prime is 1142640407. The next prime is 1142640461. The reversal of 1142640451 is 1540462411.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1142640451 - 2¹³ = 1142632259 is a prime.

It is a super-2 number, since 2×1142640451² = 2611254400522966802, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1142640461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571320225 + 571320226.

It is an arithmetic number, because the mean of its divisors is an integer number (571320226).

Almost surely, 2^1142640451 is an apocalyptic number.

1142640451 is a deficient number, since it is larger than the sum of its proper divisors (1).

1142640451 is an equidigital number, since it uses as much as digits as its factorization.

1142640451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 1142640451 is about 33802.9651214209. The cubic root of 1142640451 is about 1045.4498344935.

The spelling of 1142640451 in words is "one billion, one hundred forty-two million, six hundred forty thousand, four hundred fifty-one".