742781404 has 12 divisors (see below), whose sum is σ = 1301162800. Its totient is φ = 371020608.

The previous prime is 742781393. The next prime is 742781407. The reversal of 742781404 is 404187247.

It is a super-2 number, since 2×742781404² = 1103448428256422432, which contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742781407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87984 + ... + 96055.

Almost surely, 2^742781404 is an apocalyptic number.

It is an amenable number.

742781404 is a deficient number, since it is larger than the sum of its proper divisors (558381396).

742781404 is a wasteful number, since it uses less digits than its factorization.

742781404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185052 (or 185050 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 37.

The square root of 742781404 is about 27254.0162911817. The cubic root of 742781404 is about 905.6359922115.

It can be divided in two parts, 7427 and 81404, that added together give a triangular number (88831 = T₄₂₁).

The spelling of 742781404 in words is "seven hundred forty-two million, seven hundred eighty-one thousand, four hundred four".