542622402 has 112 divisors (see below), whose sum is σ = 1414429440. Its totient is φ = 152845056.

The previous prime is 542622341. The next prime is 542622407. The reversal of 542622402 is 204226245.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (542622407) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 805938 + ... + 806610.

Almost surely, 2^542622402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 542622402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (707214720).

542622402 is an abundant number, since it is smaller than the sum of its proper divisors (871807038).

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

542622402 is an equidigital number, since it uses as much as digits as its factorization.

542622402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 779 (or 764 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 542622402 is about 23294.2568458408. The cubic root of 542622402 is about 815.6413594816.

Adding to 542622402 its reverse (204226245), we get a palindrome (746848647).

The spelling of 542622402 in words is "five hundred forty-two million, six hundred twenty-two thousand, four hundred two".