742021700 has 54 divisors (see below), whose sum is σ = 1873087146. Its totient is φ = 254405760.

The previous prime is 742021697. The next prime is 742021703. The reversal of 742021700 is 7120247.

It is an interprime number because it is at equal distance from previous prime (742021697) and next prime (742021703).

It can be written as a sum of positive squares in 3 ways, for example, as 6635776 + 735385924 = 2576^2 + 27118^2 .

It is not an unprimeable number, because it can be changed into a prime (742021703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 70817 + ... + 80616.

It is an arithmetic number, because the mean of its divisors is an integer number (34686799).

Almost surely, 2^742021700 is an apocalyptic number.

742021700 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

742021700 is an abundant number, since it is smaller than the sum of its proper divisors (1131065446).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

742021700 is a wasteful number, since it uses less digits than its factorization.

742021700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151461 (or 151447 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 23.

The square root of 742021700 is about 27240.0752568711. The cubic root of 742021700 is about 905.3271306007.

Adding to 742021700 its reverse (7120247), we get a palindrome (749141947).

The spelling of 742021700 in words is "seven hundred forty-two million, twenty-one thousand, seven hundred".