7400458642 has 4 divisors (see below), whose sum is σ = 11100687966. Its totient is φ = 3700229320.

The previous prime is 7400458613. The next prime is 7400458651. The reversal of 7400458642 is 2468540047.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 7399268361 + 1190281 = 86019^2 + 1091^2 .

It is a super-2 number, since 2×7400458642² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7400458595 and 7400458604.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1850114659 + ... + 1850114662.

Almost surely, 2^7400458642 is an apocalyptic number.

7400458642 is a deficient number, since it is larger than the sum of its proper divisors (3700229324).

7400458642 is a wasteful number, since it uses less digits than its factorization.

7400458642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3700229323.

The product of its (nonzero) digits is 215040, while the sum is 40.

The square root of 7400458642 is about 86025.9184315983. The cubic root of 7400458642 is about 1948.7354187072.

Adding to 7400458642 its reverse (2468540047), we get a palindrome (9868998689).

The spelling of 7400458642 in words is "seven billion, four hundred million, four hundred fifty-eight thousand, six hundred forty-two".